C Program to Reverse a Number

Write aÂ C Program to Reverse a Number

Solution

#include <stdio.h>
int main() 
{
    int n, rev = 0, remainder;
    printf("Enter an integer: ");
    scanf("%d", &n);
    while (n != 0) {
        remainder = n % 10;
        rev = rev * 10 + remainder;
        n /= 10;
    }
    printf("Reversed number = %d", rev);
    return 0;
}

Output

Enter an integer: 2345

Reversed number = 5432

Programming Examples

C Program to Reverse a Number