## 8.29.2011

### operation's number(sum,reverse,store in other variable)

Q. Write a program to insert a number and do following tasks:
a.Display in reverse order?
b.Reverse in another variable and display it?
c.Display sum of its all digit?

Ans.

#include<stdio.h>
#include<conio.h>
void main()
{
int x,num,rem,sum=0,var=0;
clrscr();
printf("\nPress Number 1 for reverse number");
printf("\nPress Number 2 for reverse number in another variable");
printf("\nPress Number 3 for sum of entered number");
scanf("%d",&x);
switch(x)
{
case 1 :
printf("\nEnter Number : ");
scanf("%d",&num);
while(num>=1)
{
rem=num%10;
printf("Reverse number : %d",rem);
num=num/10;
}
break;
case 2 :
printf("Enter Number : ");
scanf("%d",&num);
while(n>=1)
{
rem=n%10;
var=var*10+rem;
n=n/10;
}
printf("%d",var);
break;
case 3 :
printf("\nEnter Number : ");
scanf("%d",&num);
while(num>=1)
{
rem=num%10;
sum=sum+rem;
num=num/10;
}
printf("Sum of %d is %d",num,sum);
break;
default :
printf("You enter wrong number!!!");
break;
}
}

Output of above program :

Press Number 1 for reverse number
Press Number 2 for reverse number in another variable
Press Number 3 for sum of entered number

1
Enter Number : 4812
Reverse number : 2184