hridoy2

#include<stdio.h>
#include<string.h>
int main()
{
    char num[10000];

    int i, len, convert_digit, sum = 0;

    scanf("%s", num);

    len = strlen(num);

    for(i = 0; i < len ; i++)
    {
        convert_digit = num[i] - '0';
        sum = sum + convert_digit;
    }

    printf("Sum is: %d", sum);

    return 0;
}