翻硬币(c++实现)

#include<iostream>
#include<cstring>
using namespace std;
const int N = 110;
char s1[N],s2[N];
int res;

void turn(int x){
    if(s1[x] == '*') s1[x] = 'o';
    else s1[x] = '*';
}

int main(){
    scanf("%s%s",s1,s2);
    int len = strlen(s1);
    for(int i=0;i<len;i++){
        if(s1[i]!=s2[i]){
            turn(i);
            turn(i+1);
            res++;
        }
    }
    printf("%d",res);
}