# write a C program to calculate the sum of its digits

**Problem Statement:**

**If a five-digit number is input through the keyboard, write a program to calculate the sum of its digits.**

**Answer:**

/* Sum of digits of a 5 digit number*/

#include<stdio.h>

#include<conio.h>

main()

{

int num,a,n;

int sum=0; /* this has been initialised to zero otherwise it will contain a garbage value */

clrscr();

print(“\n Enter a 5 digit number less than 32767”);

scanf(“%d”, &num);

a=num % 10; /* last digit expected as remainder */

n=num/10; /*Remaining Digits */

sum=sum+a; /* sum updated with addition of extracted digit */

a=n % 10; /* 4rth digit expected as remainder */

n=n/10; /*Remaining Digits */

sum=sum+a; /* sum updated with addition of extracted digit */

a=n % 10; /* 3rd digit expected as remainder */

n=n/10; /*Remaining Digits */

sum=sum+a; /* sum updated with addition of extracted digit */

a=n % 10; /* 2nd digit expected as remainder */

n=n/10; /*Remaining Digits */

sum=sum+a; /* sum updated with addition of extracted digit */

a=n % 10; /* 1st digit expected as remainder */

sum=sum+a; /* sum updated with addition of extracted digit */

printf(“\n The sum of 5 digits of %d is %d”, num, sum);

printf(“\n\n\n\n Press any key to exit…”);

getch();

}

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