Sum of digits program in C

Sum of digits program in C

Sum of digits program in C:

C program to sum each digit: We can write the sum of digits program in c language by the help of loop and mathematical operation only.

Sum of digits algorithm

To get sum of each digits by c program, use the following algorithm:

  • Step 1: Get number by user
  • Step 2: Get the modulus/remainder of the number
  • Step 3: sum the remainder of the number
  • Step 4: Divide the number by 10
  • Step 5: Repeat the step 2 while number is greater than 0.

Let’s see the sum of digits program in C.


int main()


int n,sum=0,m;

printf(“Enter a number:”);








printf(“Sum is=%d”,sum);

return 0;



Enter a number:654
Sum is=15

Enter a number:123
Sum is=6


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