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Sum of digits program in C

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robaa
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2022-11-13
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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.
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robaa
2022-11-13
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Let's see the sum of digits program in C.

#include<stdio.h>  
 int main()    
{    
int n,sum=0,m;    
printf("Enter a number:");    
scanf("%d",&n);    
while(n>0)    
{    
m=n%10;    
sum=sum+m;    
n=n/10;    
}    
printf("Sum is=%d",sum);    
return 0;  
}

Output:

Enter a number:654
Sum is=15

Enter a number:123
Sum is=6

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