Answer to Question #23650 in C++ for Joni

Question #23650
(Sum of digits) Make a program that reads a three-digit integer from the file "number.in" and then calculates sum of the digits and writes the result into the file"sum.out".Use the format of the sample output in the file "sumout".
1
Expert's answer
2013-02-05T10:59:52-0500
#include<iostream>
#include <fstream>
using namespace std;

int main() {
ifstream in("sum.in");
ofstream out("sum.out");
int a,c=0;
in >> a;
while (a>0) {
c+=a;
a/=10;
}
out << c;
return 0;
}

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