c++ primer 练习 1.13

1.13

#include<iostream>int main(){    std::cout << "Enter two numbers: " << std::endl;    int v1 = 0, v2 = 0;    std::cin >> v1 >> v2;    for(;v1 <= v2; ++v1) {        std::cout << v1 << std::endl;    }    return 0;}