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1. 在案文中使用cin和 co
原标题:using cin and cout in textmate
  • 时间:2011-11-20 16:10:16
  •  标签:
  • c++
  • textmate

我通常是 Java方案家,几乎完全使用 text,但后来我开始使用C++。 但是,当我甚至使用最基本的方案并纳入“cin>>/em>关键词并管理该方案时,我会获得一种机会,在操作期间将任何东西放入任何东西,有时它本身插入随意的价值观! 例如,如果在案文中一行:

#include <iostream>

int stonetolb(int);

int main() {

    using namespace std;
    int stone;
    cout << "enter the weight in stone";
    cin >> stone;
    int pounds = stonetolb(stone);
    cout << stone << "stone = ";
    cout << pounds <<" pounds.";
    return 0;
}

int stonetolb(int sts) {

        return 14 * sts;
}

产出如下:

进入石头32767stone = 458738磅。

为什么发生这种情况,我如何阻止这种情况?

问题回答

很可能,投入说明<代码>cin >>>stone失败,石块具有未界定的价值。 您需要使用<代码>if(cin >> stone){......} 否则{///投入故障>}来核对输入失败的情况。 至于这种简单方案为什么会显示行为失灵,我不知道你会检查文字记录。





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