C Program to find the sum of first and last digit of a number

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In this program, You will learn how to find the sum of first and last digit of a number in c.

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The number is: 1234

Sum of first and last digit is: 1 + 4 = 5

Example: How to find the sum of first and last digit of a number in c.

#include<stdio.h>

int main() {

   int n, r, fd, ld, sum, rev = 0;

   printf("Enter a number:");
   scanf("%d", &n);

   ld = n % 10;

   while (n > 0) {
       r = n % 10;
       rev = rev * 10 + r;
       n = n / 10;
   }

   fd = rev % 10;
   sum = fd + ld;
   printf("Sum of first and last digit:%d", sum);

   return 0;
}

Output:

Enter a number:2345                                                                                                                    
Sum of first and last digit:7