C++ Primer第五版学习笔记四 控制流while语句

#include <iostream>

int main() {
    int sum = 0, val = 1;
    while (val <= 10) {
        sum += val;
        ++val;
    }

    std::cout << "1到10的合计：" << sum << std::endl;

    return 0;
}

#include <iostream>

int main() {
    int sum = 0, val = 50;
    while (val <= 100) {
        sum += val;
        ++val;
    }

    std::cout << "50到100的合计：" << sum << std::endl;

    return 0;
}

#include <iostream>

int main() {
    int val = 10;
    while (val >= 0) {
        std::cout << val << std::endl;
        --val;
    }

    return 0;
}

#include <iostream>

int main() {
    int v1, v2;
    std::cout << "请输入两个整数" << std::endl;
    std::cin >> v1 >> v2;

    int maxV, minV;
    if (v1 >= v2) {
        maxV = v1;
        minV = v2;
    }
    else
    {
        maxV = v2;
        minV = v1;
    }

    while (minV <= maxV) {
        std::cout << minV << std::endl;
        ++minV;
    }

    system("pause");
    return 0;
}