Sum of digits program in C

Sum of digits program in C With Example

C program to sum each digit: Let’s Make a program in C language to the sum of digits program with the help of loop and mathematical operation.

Steps to design algorithm sum of Integers

To get sum of each digits by c program, use the following algorithm:
  • Step 1: Take number by user as Input
  • 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.
  1. #include<stdio.h>  
  2. #include<conio.h>  
  3. void main()  
  4. {  
  5. int n,sum=0,m;  
  6. clrscr();  
  7. printf(“Enter a number:”);  
  8. scanf(“%d”,&n);  
  9. while(n>0)  
  10. {  
  11. m=n%10;  
  12. sum=sum+m;  
  13. n=n/10;  
  14. }  
  15. printf(“Sum is=%d”,sum);  
  16. getch();  
  17. }     

Output:

Enter a number:654
Sum is=15

Enter a number:123
Sum is=6

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