数字和字符串之间得转化

链接

sprintf(指向数组得指针，格式化字符串，数值)

int main() {
        int x;
        string str;
        char str2[56];
        stringstream ss;
        cin >> x;
        ss << x;
        ss >> str;
        sprintf(str2,"%d",x);
        cout << str<<" "<<str2;
        return 0;
    }

stringstream