Question

如果我的用户输入满足前一个if状态，我无法弄清楚如何使我的代码转到下一个if语句。

#include <iostream>

using namespace std;

int main()
{
    double input;
    cout << "Time Calculator\n Enter the number of Seconds: " << endl;
    cin >> input;
    if (input < 60)
    {
        cout << "The time is " << input << " seconds." << endl;
    }
    else if (input >= 60)
    {
        cout << "The time is " << input << " minutes." << endl;
    }
    else if (input >= 3600)
    {
        cout << "The time is " << input << " hours." << endl;
    }
    else if (input >= 86400)
    {
        cout << "The time is " << input << " days." << endl;
    }
    return 0;
}

Answer 1

如果输入＆gt;则在您的代码中

60它将满足条件并且不会执行其他部分因此首先检查其输入＆gt; 86400如果没有那么检查是否输入＆gt;如果没有则为36000然后检查输入＆gt; 60

尝试以下代码，如果条件反转

#include <iostream>

using namespace std;

int main()
{
double input;
cout << "Time Calculator\n Enter the number of Seconds: " << endl;
cin >> input;
if (input < 60)
{ 
  cout << "The time is " << input << " seconds." << endl;
}
else if (input >= 86400)
{
    cout << "The time is " << input << " days." << endl;
}
else if (input >= 3600)
{
    cout << "The time is " << input << " hours." << endl;
}
else if (input >= 60)
{
    cout << "The time is " << input << " minutes." << endl;
}
return 0;
}

Answer 2

反过来说。

Sat Dec 30 1899 08:09:00 GMT-0500 (EST)

希望这就是你想要的！

Answer 3

有多种方法可以执行此操作，您可以使用>= val1 and < val2等条件在两个值之间进行检查，或者确保检查发生的顺序不同。

#include <iostream>

using namespace std;

int main()
{
    double input;
    cout << "Time Calculator\n Enter the number of Seconds: " << endl;
    cin >> input;
    if (input < 60)
    {
        cout << "The time is " << input << " seconds." << endl;
    }
    else if (input >= 60 && input < 3600)
    {
        cout << "The time is " << input << " minutes." << endl;
    }
    else if (input >= 3600 && input < 86400)
    {
        cout << "The time is " << input << " hours." << endl;
    }
    else if (input >= 86400)
    {
        cout << "The time is " << input << " days." << endl;
    }
    return 0;
}

或其他方式是更改订单，一旦特定if语句有效，它就不会检查其余的if语句。

#include <iostream>

using namespace std;

int main()
{
    double input;
    cout << "Time Calculator\n Enter the number of Seconds: " << endl;
    cin >> input;
    if (input >= 86400)
    {
        cout << "The time is " << input << " seconds." << endl;
    }
    else if (input >= 3600)
    {
        cout << "The time is " << input << " minutes." << endl;
    }
    else if (input >= 60)
    {
        cout << "The time is " << input << " hours." << endl;
    }
    else if (input < 60)
    {
        cout << "The time is " << input << " days." << endl;
    }
    return 0;
}

Answer 4

你的if else条件没有完全定义......你必须在范围内设置它们......否则不会起作用......

if (input < 60)
    {
        cout << "The time is " << input << " seconds." << endl;
    }
    else if (input >= 60 && input < 3600))
    {
        cout << "The time is " << input << " minutes." << endl;
    }
    else if (input >= 3600 && input < 86400))
    {
        cout << "The time is " << input << " hours." << endl;
    }
    else if (input >= 86400)
    {
        cout << "The time is " << input << " days." << endl;
    }

如何在C ++中跳过＆gt; =

4 个答案: