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Python Scripting/Programming Language

Assignmennts of IF and ELIF statements

    2. marks=int(input("Enter marks"))
if marks>=80 and marks<=100:
    print("A Grade")
elif marks>=60 and marks<80:
    print("B Grade")
elif marks>=40 and marks<60:
    print("C Grade")
elif marks>=0 and marks < 40:
    print("Fail")
    

    3. age=int(input("Enter age"))
if age>=18:
    print("Eligible for voting")
else:
    print("Not eligible for voting")
    

    4. num=int(input("Enter any number"))
if num>0:
    print("Number is Positive")
elif num<0:
    print("Number is Negative")
else:
    print("Number is Zero")

    5. num=int(input("Enter any number"))
if num%2==0:
    print("Number is even")
else:
    print("Number is odd")


    6. ch=input("Enter any character")
if ch=='a' or ch=='e' or ch=='i' or ch=='o' or ch=='u':
    print("Character is vowel")
else:
    print("Character is consonent")


    7. ch=input("Enter any character")
if ch=='a' or ch=='e' or ch=='i' or ch=='o' or ch=='u':
    print("Character is vowel")
elif ch=='!' or ch=='@' or ch=='#' or ch=='$' or ch=='%':
    print("Character is special character")
else:
    print("Character is consonent")


    8.     price=0
unit=int(input("Enter number of electric units"))
if unit<=100:
    price=0
if unit>100 and unit<=200:
    price=(unit-100)*5
if unit>200:
    price=500+(unit-200)*10
print("Total bill amount is: ",price)
    

    9. day=int(input("Enter any number between 1 to 7 for week days"))
if day==1:
    print("Day is Monday")
elif day==2:
    print("Day is Tuesday")
elif day==3:
    print("Day is Wednesday")
elif day==4:
    print("Day is Thursday")
elif day==5:
    print("Day is Friday")
elif day==6:
    print("Day is Saturday")
elif day==7:
    print("Day is Sunday")

    10.     num=int(input("Enter any number"))
n=num%10
if n%5==0:
    print("Last digit of number is divisible by 5")
else:
    print("Last digit of number is not divisible by 5")
    

    11. num=int(input("Enter any number between 0 to 9"))
if num==0:
    print("Zero")
elif num==1:
    print("One")
elif num ==2:
    print("Two")
elif num==3:
    print("Three")
elif num==4:
    print("Four")
elif num==5:
    print("Five")
elif num==6:
    print("Six")
elif num==7:
    print("Seven")
elif num==8:
    print("Eight")
elif num==9:
    print("Nine")
else:
    print("Wrong input")

    12. num=int(input("Enter any number between 1 to 12 for month name"))
if num==1:
    print("January")
elif num ==2:
    print("February")
elif num==3:
    print("March")
elif num==4:
    print("April")
elif num==5:
    print("May")
elif num==6:
    print("June")
elif num==7:
    print("July")
elif num==8:
    print("August")
elif num==9:
    print("September")
elif num == 10:
    print("October")
elif num==11:
    print("November")
elif num==12:
    print("December")
else:
    print("Wrong input")
	

    13. n=int(input("Press 1 for addition\nPress 2 for subtraction\nPress 3 for multiplication\nPress 4 for division\nPress 5 for exit"))
if n==1:
    num1 = int(input("Enter first number"))
    num2 = int(input("Enter second number"))
    res=num1+num2;
    print("The sum is: ",res)
elif n==2:
    num1 = int(input("Enter first number"))
    num2 = int(input("Enter second number"))
    res=num1-num2;
    print("The difference is: ",res)
elif n==3:
    num1 = int(input("Enter first number"))
    num2 = int(input("Enter second number"))
    res=num1*num2;
    print("The multiplication is: ",res)
elif n==4:
    num1 = int(input("Enter first number"))
    num2 = int(input("Enter second number"))
    res=num1/num2
    print("The division is: ",res)
elif n==5:
    exit()
   
    

num1=int(input("Enter first number"))
num2=int(input("Enter second number"))
num3=int(input("Enter third number"))
if num1>num2 and num1>num3:
    print("num1 is greater")
elif num2>num1 and num2>num3:
    print("num2 is greater")
else:
    print("num3 is greater")

Assignments of For Loop

  1. for i in range(1,11):
print("*",end="")

  2. for i in range(1,11):
print("*")


  3. for i in range(1,7):
   	print("   *")
   	print("COMPUHELP")


  4. for i in range(0,10):
 	 print(i,end=" ")


  5. for i in range(9,-1,-1):
    	print(i,end=" ")
        

  6. for i in range(5,21):
    	print(i,end=" ")
        

  7. for i in range(45,6,-1):
  	print(i,end=" ")
        

  8. for i in range(1,21,2):
  	print(i,end=" ")


  9. for i in range(0,21,2):
  print(i,end=" ")

  10. num = int(input("Enter the number: "))
for i in range(1,num,2):
   print(i,end=" ")
   

  11. num = int(input("Enter the number: "))
for i in range(0,num,2):
   print(i,end=" ")
   

  12. for i in range(0,51,3):
   	print(i,end =" ")
    

  13. a=int(input("Enter the terms: "))
b=0
s=1
if a<=0:
  print("The requested series is: ",b)
else:
   print(b,s,end=" ")
for x in range(2,a):
   next=b+s
   print(next,end=" ")
   b=s
   s=next

  14. a=int(input("Enter the terms: "))
prod=1
for i in range(0,a):
   print(prod)
   prod=prod*2
   

  15. a=int(input("Enter the terms: "))
fact=1
for i in range(1,a+1):
  fact=fact * i
  print(i,"*",end=" ")
print("\b\b = ",fact)


  16. a=int(input("Enter the terms: "))
sum=0
for i in range(1,a+1):
   sum=sum+i
   print(i, "+", end=" ")
print("\b\b = ", sum)


  17. m=int(input("Enter the value for m: "))
n=int(input("Enter the value for n: "))
res=1
for i in range(1,n+1):
   res*=m
print("The result is: ",res)

Assignments of Nested For Loop

    2. for i in range(1,4):
    for j in range(1,4):
        print("*",end="")
    print()
    

    3. for i in range(1,4):
    for j in range(1,4):
        print("1",end="")
    print()
    

  3. for i in range(1,4):
    for j in range(1,4):
        print(j,end="")
    print()

    5. for i in range(1,4):
    for j in range(1,4):
        print(i,end="")
    print()
    

    6. k=1
for i in range(1,4):
   for j in range(1,4):
     print(k,end="")
     k+=1
   print()


    7.     for i in range(3,0,-1):
        for j in range(1,4):
           print(i,end="")
        print()
    

    8. k=9
for i in range(1,4):
    for j in range(1,4):
        print(k,end="")
        k-=1
    print()


    9. for i in range(3,0,-1):
    for j in range(3,0,-1):
        print(j,end="")
    print()
    

    10. for i in range(1,4):
    for j in range(0,i):
        print("*",end="")
    print()


    11. for i in range(3, 0, -1):
  for j in range(0, i):
    print("*", end = "")
  print()

    12. for i in range(1, 4):
 for j in range(1, i + 1):
   print(j, end="")
 print()


    13. for i in range(1, 4):
 for j in range(1, i + 1):
   print(i, end="")
 print()

    14. for i in range(3,0,-1):
 for j in range(4,i,-1):
  print(i,end="")
 print()


    15. for i in range(1,4):
  for j in range(4,i,-1):
     print(i,end="")
  print()

    16. for i in range(3, 0, -1):
 for j in range(i, 4):
  print(j, end="")
 print()

    17. for i in range(3,0,-1):
 for j in range(3,i-1,-1):
  print(j,end="")
 print()

    18. for i in range(1,4):
 for k in range(i,1,-1):
  print(end=" ")
 for j in range(3,i-1,-1):
  print("*",end="")
 print()


    19. for i in range(3,0,-1):
 for k in range(2,i-1,-1):
  print(end=" ")
 for j in range(1,i+1):
  print(j,end="")
 print()
 

    20. for i in range(1,4):
      for k in range(i,1,-1):
        print(end=" ")
      for j in range(3,i-1,-1):
        print(i,end="")
      print()
      

    21. for i in range(1,4):
    for j in range(0,i):
        print("* ",end="")
    print()
    

    22. k=1
for i in range(1,6,2):
 for j in range(1,i+1):
  print(k,end="")
 print()
 k+=1
 

    23. &for i in range(1, 4):
 for j in range(1, i + 1):
  print(i, end=" ")
 print()
 

    24. n=1
for i in range(1,6,2):
    for k in range(i,5,2):
        print(end=" ")
    for j in range(1,i+1):
        print(n,end=" ")
    print()
    n+=1


    25. n=1
for i in range(1,6,2):
    for k in range(i,5,2):
        print(end=" ")
    for j in range(1,i+1):
        print(n,end=" ")
    print()
    n+=1



    26. for i in range(1,6,2):
    for j in range(5,i-1,-1):
        print("*",end=" ")
    print()


    27. for i in range(1, 4):
    for j in range(3,i-1,-1):
        print("*", end=" ")
    print()
    

    28. for i in range(1, 6, 2):
 for k in range(1, i - 1, 2):
  print(end="  ")
 for j in range(i, 6):
  print("*", end=" ")
 print()
 

    29. for i in range(1, 4):
    for k in range(1,i):
        print(end=" ")
    for j in range(i, 4):
        print(" *", end = " ")
    print()
    

    30. k=3
for i in range(1,6,2):
 for j in range(5,i-1,-1):
  print(k,end="")
 print()
 k-=1
 

    31. k = 3
for i in range(1,4):
 for j in range(3,i-1,-1):
  print(k,end=" ")
 print()
 k -= 1
 

    32. n = 3
for i in range(5, 0, -2):
 for k in range(5, i + 1, -2):
  print(end=" ")
 for j in range(1, i + 1):
  print(n, end="")
 print()
 n -= 1


    33. n=1
for i in range(1,6,2):
    for k in range(i,5,2):
        print(end=" ")
    for j in range(1,i+1):
        print(n,end="")
    print()
    n+=1
n=n-2
for i in range(3,0,-2):
    for k in range(5,i,-2):
        print(end=" ")
    for j in range(1,i+1):
        print(n, end="")
    print()
    n-=1
    

    34. for i in range(3, 0, -1):
    for k in range(i, 3):
        print(end=" ")
    for j in range(1, i + 1):
        print(i, end=" ")
    print()
    

    35. n = 1
for i in range(1, 4):
 for k in range(i, 3):
  print(end=" ")
 for j in range(1, i + 1):
  print(n, end=" ")
 print()
 n += 1
for i in range(2,0,-1):
    for k in range(3,i,-1):
        print(end=" ")
    for j in range(1,i+1):
        print(i,end=" ")
    print()

ASSIGNMENTS OF FUNCTIONs

    2. def sum(a,b,c,d):
    res=a+b+c+d
    return res
w=int(input("Enter 1st number"))
x=int(input("Enter 2st number"))
y=int(input("Enter 3st number"))
z=int(input("Enter 4st number"))
res=sum(w,x,y,z)
print(res)

    

    3. def sum(a,b):
    res=a+b
    return res
def sub(a,b):
    res=a-b
    return res
def mul(a,b):
    res=a*b
    return res
def div(a,b):
    res=a/b
    return res
x=int(input("Enter 1st number"))
y=int(input("Enter 2nd number"))
choice=int(input("Enter:\n 1 for sum\n 2 for subtract\n 3 for multiply \n 4 for divide"))
if choice==1:
 a=sum(x,y)
 print("The sum of number is:", a)
elif choice==2:
 b=sub(x,y)
 print("The subtration of number is:", b)
elif choice==3:
 c=mul(x,y)
 print("The multiplication of number is:", c)
elif choice==4:
 d=div(x,y)
 print("The division of number is:", d)
    

    4. def fun(x):
 print("The odd numbers in range 1 to", x)
 for i in range(1,x):
  if i%2!=0:
   print(i)
a=int(input("Enter a number"))
fun(a)


    5. def fun(x):
 print("The even numbers in range 0 to", x)
 for i in range(1,x+1):
  if i%2==0:
   print(i)
   
a=int(input("Enter a number"))
fun(a)
 

    6. def fun(x):
 for i in range(1,x+1):
  print("Print the square of number", i, "is", i * i)
  
n= int(input("Enter a number"))
fun(n)


    7. def display(x, y):
 for i in range(0, y):
  print(x, end="")
     
a = input("Enter a character")
b = int(input("How much time will it repeat itself"))
display(a, b)


    8. def fun(x,y):
 for i in range(x,y+1):
  print(i)

a = int(input("Enter the starting value"))
b = int(input("Enter the ending value"))
fun(a,b)


    9. def fun(x,y):
 res=0
 for i in range(x,y+1):
  res=res+i
 return res

a = int(input("Enter the starting value"))
b = int(input("Enter the ending value"))
res = fun(a,b)
print(res)


    10. def alpha(a):
  for i in range(65, 90):
     print(a)
     a = chr(ord(a) + 1)

x = input("Enter a alphabet")
alpha(x)


    11. def fun(x):
 if x>-1:
  print("number is positive")
 else:
  print("number is negative")

a = int(input("Enter a number"))
fun(a)



    12. def fibonacci(x):
    j = 0
    k = 1
    print(j)
    print(k)
    for i in range(0, x - 2):
        m = j + k
        j = k
        k = m
        print(m)

n = int(input("Enter a number"))
fibonacci(n)


    13. def fibonacci(x):
    j=0
    k=1
    print(j)
    print(k)
    for i in range(0,x-2):
        m=j+k
        j=k
        k=m
        print(m)
a=int(input("Enter a number"))
fibonacci(a)

 

    14. def uppercase(a):
    x=a.upper()
    print(x)

ch=input("Enter a character in lowercase")
uppercase(ch)

 

    15. def uppercase(a):
    x = a.lower()
    print(x)

ch = input("Enter a character in Uppercase")
uppercase(ch)


    16. def series(n):
    res = 0
    for i in range(1, n + 1):
        j = i * i
        res = res + j
        print(j, "+ ", end="")
    print("\b\b =", res)

a = int(input("Enter a number"))
series(a)


    17. def fact(a):
 fac = 1
 for i in range(a,1,-1):
    fac = fac * i
 return fac

x = int(input("Enter a number:"))
y = fact(x)
print("The factorial is", y)



    18.     #include<stdio.h>
     
    	void main()
      {
void triangle(int);
int num;
printf("Enter any number");
scanf("%d",&num);
triangle(num);
 
}
void triangle(int n)
{
int i,j,k;
for(i=n;i>=0;i--)
{
for(j=0;j<=i;j++)
{
printf(" ");
}
for(k=i;k
    

    19.     #include<stdio.h>
     
    	void main()
      {
void triangle(int);
int num;
printf("Enter any number");
scanf("%d",&num);
triangle(num);
 
}
void triangle(int n)
{
int i,j,k;
for(i=0;i0;j--)
{
printf(" ");
}
for(k=n;k>i;k--)
{
printf("*");
}
printf("\n");
}}
 

    20.     #include<stdio.h>
     
    	void main()
      {
void pyramid(int);
int num;
printf("Enter any number");
scanf("%d",&num);
pyramid(num);
 
}
void pyramid(int n)
{
int i,j,c;
for(i=1;i<=n;i++)
{
for(j=i;j
    

    21.     #include<stdio.h>
     
    	void main()
      {
void swap(int,int);
int x,y;
printf("Enter first number");
scanf("%d",&x);
printf("Enter Second number");
scanf("%d",&y);
swap(x,y);
 
}
void swap(int a,int b)
{
int c;
printf("\nThe value of numbers before swapping is: ");
printf("\n First: %d",a);
printf("\n Second : %d",b);
c=a;
a=b;
b=c;
printf("\nThe value of numbers after swapping is:");
printf("\nFirst: %d",a);
printf("\nSecond: %d",b);
}


    22.     #include<stdio.h>
     
    	void main()
      {
int fact(int);
int i,n,fac;
printf("Enter any number");
scanf("%d",&n);
fac=fact(n);
printf("The factorial is:");
for(i=n;i>=1;i--)
{
printf("%d*",i);
}
{
printf("\b=%d",fac);
}
 
}
int fact(int value)
{
int ans;
 if((value==0)||(value==1))
 return(1);
 else
 ans=value*fact(value-1);
 return(ans);
 }

Assignments of Structure

    2.     #include<stdio.h>
     
    
     struct student
  {
  char name[10];
  int subject[9];
  };
void main()
{
  struct student st;
  int sum=0,avg,i;
  printf("Enter name");
  gets(st.name);
  for(i=0;i<9;i++)
  {
   printf("Enter the marks of %d subject",i+1);
   scanf("%d",&st.subject[i]);
   sum=sum+st.subject[i];
  }
  avg=sum/9;
  printf("\n Average of nine subjects is %d",avg);
             
    }
    

    3.     #include<stdio.h>
     
    struct employee
{
  char name[10];
  int salary;
  int id;
};

void main()
{
int i;
struct employee emp[5];
for(i=0;i<5;i++)
{
 printf("Enter name");
 //gets(emp[i].name);
 scanf("%s",&emp[i].name);
 printf("Enter salary");
 scanf("%d",&emp[i].salary);
 printf("Enter id");
 scanf("%d",&emp[i].id);
}
for(i=0;i<5;i++)
{
  printf("\n Name is %s",emp[i].name);
  printf("\n Salary is %d",emp[i].salary);
  printf("\n Id is %d",emp[i].id);
 }
         
    }
    

    4.     #include<stdio.h>
     
    struct student
{
  char name[10];
  int subject[5];
};
void main()
{
  struct student st[5];
  int sum,avg,i,j;
  for(i=0;i<5;i++)
  {
  sum=0;
  printf("Enter name");
  scanf("%s",&st[i].name);
  printf("\nEnter the marks of %d student\n\n",i+1);
  for(j=0;j<5;j++)
  {
   printf("\nEnter the marks of %d subject",j+1);
   scanf("%d",&st[i].subject[j]);
   sum=sum+st[i].subject[j];

  }
   avg=sum/5;
  printf("\n Average marks of %d student is %d",i+1,avg);
  printf("\n");
  }
         
    }
    

    5.     #include<stdio.h>
     
    struct student
{
  char name[10];
  int subject[5];
};
void main()
{
  struct student st,*ptr;
  ptr=&st;
  int sum=0,avg,i;
  printf("Enter name");
  gets(ptr->name);
  for(i=0;i<5;i++)
  {
   printf("Enter the marks of %d subject",i+1);
   scanf("%d",&ptr->subject[i]);
   sum=sum+ptr->subject[i];
  }
  avg=sum/5;
  printf("\n Average of nine subjects is %d",avg);

         
    }
    

    6.     #include<stdio.h>
     
   struct student
{
  char name[10];
  int subject[5];
};
void main()
{
  struct student st[5],*ptr;

  int sum,avg,i,j;
  for(i=0;i<5;i++)
  {
  ptr=&st[i];
  sum=0;
  printf("Enter name");
  scanf("%s",&ptr->name);
  printf("\nEnter the marks of %d student\n\n",i+1);
  for(j=0;j<5;j++)
  {
   printf("\nEnter the marks of %d subject",j+1);
   scanf("%d",&ptr->subject[j]);
   sum=sum+ptr->subject[j];

  }
   avg=sum/5;
  printf("\n Average marks of %d student is %d",i+1,avg);
  printf("\n\n");
  }
         
    }
    

    7.     #include<stdio.h>
     
   struct student
{
    int rollno;
    char name[10];
    int fee;
}st;

void main()
{
void display(struct student*);
printf("Enter name : ");
scanf("%s",&st.name);
printf("Enter rollno : ");
scanf("%d",&st.rollno);
printf("Enter fee : ");
scanf("%d",&st.fee);
display(&st);

  
}
void display(struct student *st)
{
 printf("\n Name is %s",st->name);
 printf("\n Rollno is %d",st->rollno);
 printf("\n Fee is %d",st->fee);
}

    ///////////////////////////////////////////////////////////////////

    Assignments of File Handling

      2. #include<stdio.h>
       
      void main()
      {
      FILE *fptr;
      fptr=fopen("first.txt","w");
      fprintf(fptr,"Welcome to Compuhelp");
      fclose(fptr);
        
      }

      3. #include<stdio.h>
       
      void main()
      {
      FILE *fptr;
      int num;
      fptr=fopen("first.txt","w");
      printf("Enter a number ");
      scanf("%d",&num);
      fprintf(fptr,"%d",num);
      printf("Data saved");
      fclose(fptr);
        
      }

      4. #include<stdio.h>
       
      void main()
      {
      FILE *fptr;
      int num;
      fptr=fopen("first.txt","w");
      printf("Enter a number ");
      scanf("%d",&num);
      fprintf(fptr,"%d",num);
      printf("Data saved");
      fclose(fptr);
      fptr=fopen("first.txt","r");
      fscanf(fptr,"%d",&num);
      printf("\n Value of num= %d",num);
      fclose(fptr);
        
      }

      5. #include<stdio.h>
       
      void main()
      {
      FILE *fptr;
      int num;
      fptr=fopen("first.txt","w");
      printf("Enter a number ");
      scanf("%d",&num);
      fprintf(fptr,"%d",num);
      printf("Data saved");
      fclose(fptr);
      fptr=fopen("first.txt","r");
      fscanf(fptr,"%d",&num);
      printf("\n Now writing into anoter file");
       fptr=fopen("second.txt","w");
         fprintf(fptr,"%d",num);
      fclose(fptr);
        
      }

      6. #include<stdio.h>
      #include<stdlib.h>
       
      void main()
      {
      FILE *fptr;
      char ch;
      fptr=fopen("string.txt","w");
      if(fptr==NULL)
      {
      printf("Error in opening file ");
      exit(1);
      }
      fprintf(fptr,"welcome you in COMPUHELP");
      printf("Data saved\n");
      fclose(fptr);
      fptr=fopen("string.txt","r");
      while(ch!=EOF)
      {
       ch=fgetc(fptr);
       printf("%c",ch);
      }
      fclose(fptr);
        
      }

      7. #include<stdio.h>
      #include<stdlib.h>
       
      void main()
      {
      FILE *fptr;
      char ch;
      int count=0;
      fptr=fopen("string.txt","w");
      if(fptr==NULL)
      {
      printf("Error in opening file ");
      exit(1);
      }
      fprintf(fptr,"welcome you in COMPUHELP");
      printf("Data saved\n");
      fclose(fptr);
      fptr=fopen("string.txt","r");
      while(ch!=EOF)
      {
       ch=fgetc(fptr);
       printf("%c",ch);
       count++;
      }
      printf("\n The number of characters are: %d",count);
      fclose(fptr);
        
      }

      8. #include<stdio.h>
      #include<stdlib.h>
       
      void main()
      {
      FILE *fptr;
      char ch;
      int count=0;
      fptr=fopen("string.txt","w");
      if(fptr==NULL)
      {
      printf("Error in opening file ");
      exit(1);
      }
      fprintf(fptr,"welcome you in COMPUHELP");
      printf("Data saved\n");
      fclose(fptr);
      fptr=fopen("string.txt","r");
      while(ch!=EOF)
      {
       ch=fgetc(fptr);
      if(ch=='a'||ch=='e'||ch=='i'||ch=='o'||ch=='u'||ch=='A'||ch=='E'||ch=='I'||ch=='O'||ch=='U')
      {
       count++;
       printf("%c ",ch);
       }
      }
      printf("\n The number of vowels are: %d",count);
      fclose(fptr);
        
      }

      9. #include<stdio.h>
      #include<stdlib.h>
       
      void main()
      {
      FILE *fptr;
      char ch;
      int upr=0,lwr=0;
      fptr=fopen("string.txt","w");
      if(fptr==NULL)
      {
      printf("Error in opening file ");
      exit(1);
      }
      fprintf(fptr,"welcome you in COMPUHELP");
      printf("Data saved\n");
      fclose(fptr);
      fptr=fopen("string.txt","r");
      while(ch!=EOF)
      {
       ch=fgetc(fptr);
      if(ch>=65 && ch<=90)
      {
       upr++;
       //printf("%c ",ch);
       }
       if(ch>=97 && ch<=122)
       {
        lwr++;
         //printf("%c ",ch);
       }
      }
      printf("\n The number of Uppers are: %d",upr);
      printf("\n The number of Lowers are: %d",lwr);
      fclose(fptr);
        
      }

      10. #include<stdio.h>
      #include<stdlib.h>
       
      void main()
      {
      FILE *fptr;
      char ch;
      int space=0,word=0;
      fptr=fopen("string.txt","w");
      if(fptr==NULL)
      {
      printf("Error in opening file ");
      exit(1);
      }
      fprintf(fptr,"welcome you in COMPUHELP");
      printf("Data saved\n");
      fclose(fptr);
      fptr=fopen("string.txt","r");
      while(ch!=EOF)
      {
       ch=fgetc(fptr);
      if(ch==' ')
      {
      space++;
      word++;
      }
      }
      printf("\n The number of Spaces are: %d",space);
      printf("\n The number of Words are: %d",(word+1));
      fclose(fptr);
        
      }

      11. #include<stdio.h>
      #include<stdlib.h>
       
      void main()
      {
      FILE *fptr;
      char ch;
      int line=0;
      fptr=fopen("string.txt","w");
      if(fptr==NULL)
      {
      printf("Error in opening file ");
      exit(1);
      }
      fprintf(fptr,"welcome you in COMPUHELP\n Thanks to Join Compuhelp\nBye");
      printf("Data saved\n");
      fclose(fptr);
      fptr=fopen("string.txt","r");
      while(ch!=EOF)
      {
       ch=fgetc(fptr);
      if(ch=='\n')
      {
      line++;
      }
      }
      printf("\n The number of Lines are: %d",(line+1));
      fclose(fptr);
        
      }

      12. #include<stdio.h>

      void main()
      {
      FILE *fptr;
      int num[10];
      int i,even=0,odd=0;

      fptr=fopen("first.txt","w");
      printf("Enter number's ");
      for(i=0;i<10;i++)
      {
      scanf("%d",&num[i]);
      }
      for(i=0;i<10;i++)
      {
      fprintf(fptr,"%d ",num[i]);
      }
      printf("Data saved");
      fclose(fptr);
      fptr=fopen("first.txt","r");
      for(i=0;i<10;i++)
      {
      fscanf(fptr,"%d",&num[i]);
      if(num[i]%2==0)
      {
      even++;
      }
      else
      {
      odd++;
      }
      }
      printf("\n Number of even numbers are %d",even);
      printf("\n Number of odd numbers are %d",odd);
      fclose(fptr);

      }

       

      13. #include<stdio.h>
      #include<stdlib.h>

      void main()
      {
      FILE *fptr;
      char ch,ch1,name[50];
      int line=0;
      fptr=fopen("string.txt","w");
      if(fptr==NULL)
      {
      printf("Error in opening file ");
      exit(1);
      }
      printf("Enter a string ");
      gets(name);
      fprintf(fptr,"%s",name);
      printf("Data saved\n");
      fclose(fptr);
      fptr=fopen("string.txt","r");
      printf("Enter another character ");
      scanf("%c",&ch1);
      while(ch!=EOF)
      {
      ch=fgetc(fptr);
      if(ch==ch1)
      {
      ch=ch-32;
      printf("%c",ch);
      }
      else

      {
      printf("%c",ch);
      }

      }

      fclose(fptr);

      }

       

      14. #include<stdio.h>
      #include<stdlib.h>

      struct student
      {
      char name[20];
      int rollno;
      float fee;
      };
      void main()
      {
      struct student st;
      FILE *fptr;
      char ch,ch1,name[50];
      int line=0;
      fptr=fopen("data.txt","w");
      if(fptr==NULL)
      {
      printf("Error in opening file ");
      exit(1);
      }
      printf("Enter a name ");
      gets(st.name);
      printf("Enter rollno ");
      scanf("%d",&st.rollno);
      printf("Enter fee ");
      scanf("%f",&st.fee);
      fprintf(fptr,"%s",st.name);
      fprintf(fptr,"\n%d",st.rollno);
      fprintf(fptr,"\n%f",st.fee);
      printf("\nData saved");
      fclose(fptr);

      }