Question

#include <iostream>

int main()
{
    std::cout << "Nerdrvox skzbnakan gumar = ";
    double invmoney = 0;
    std::cin >> invmoney;
    std::cout << std::endl << "Nerdrvox skzbnakan gumar = " << invmoney;
    std::cout << std::endl << "Qani tarov = ";
    int years = 0;
    std::cin >> years;
    std::cout << std::endl << "Qani tarov = " << years;

    /*
     * After this point the cmd says press any key to continue, after pressinga key
     * cmd closes. However it is supposed to do this.
     */

    double summary = invmoney;

    int months = 12 * years;
    for (int i = months; i < 0; i--)
    {
        std::cout << "Month " << i - months << std::endl << "Invested money"
                << summary << std::endl;
        double percent = summary * 0.1;
        std::cout << "Add percent" << percent << std::endl;
        summary += percent;
        std::cout << "Sum for month " << i - months << "is " << summary;
    }

    return 0;
}

你能告诉我为什么以及如何解决它？

Answer 1

是的，这是因为你的for循环没有执行。

for (int i = months; i<0; i--)

需要

for (int i = months; i>0; i--)

for具有以下结构：

for (initialization; condition; increase) statement;

只要condition为真，for循环就会继续执行。在原始示例中，i被设置为months，根据您的输入，i<0将大于或等于零。这会使条件{{1}}为false，这将完全跳过循环。

Answer 2

它做它应该做的事情

for (int i = months; i<0; i--)

如果月份的值为正，则循环将不会运行

将其更改为

for (int i = months; i>0; i--)

Answer 3

您的循环条件：

for (int i = months; i<0; i--)

说只要i小于零就会循环，因此它甚至不会运行第一个循环，因为我大于或等于零（假设用户输入有效年份）。

为什么我的C ++程序在此之后不起作用

3 个答案: