1357 뒤집힌 덧셈

#include <stdio.h>
#include <string>
#include <math.h>
 
using namespace std;
 
int rev(string str) {
    int len = str.length();
 
    int rst = 0;
    for (int i = 0; i < len; i++)
        rst += pow(10, i) * (int)(str[i] - '0');
 
    return rst;
}
 
int main() {
    char x[10];
    char y[10];
    scanf("%s %s", &x, &y);
 
    int sum = rev(x) + rev(y);
    int rst = rev(to_string(sum));
 
    printf("%d", rst);
}