Program to find sum of digits of four digits number in C-language

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#include<stdio.h>
int main()
{
    int a,b,c,d,x,s;
    printf("Enter four digit numbers\n");
    scanf("%d",&x);
    a=x%10;
    x=x/10;
    b=x%10;
    x=x/10;
    c=x%10;
    x=x/10;
    d=x%10;
    x=x/10;
    s=a+b+c+d;
    printf("Sum of digit=%d",s);
}

OUTPUT
Enter four digit numbers
1234
Sum of digit=10

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