将文件路径以"\"隔开

void fileNameDiscompose(string road,string s_array[30])
{
    int block = 0;
    //string s_array[30]; //局部变量，如果使用return外面得不到想要的
    string tmp = "";
    for(int i = 0; i < road.length(); i++){
        if(road[i] != ‘\\‘){
            tmp += road[i];
        }
        else{
            s_array[block] = tmp;
            tmp = "";
            block++;
        }
    }
    s_array[block] = tmp;
}