C++ 中的条件语句

#include <iostream>int main (){std::cout << "Enter Two numbers: " << std::endl;int v1, v2;std::cin >> v1 >> v2;int lower, upper;if(v1 <= v2){lower = v1;upper = v2;}else{lower = v2;upper = v1;}std::cout << "两个数中比较小的数是：" << lower << std::endl;    std::cout << "两个数中比较大的数是：" << upper << std::endl;return 0;}