问题描述
我在尝试检查 if 语句中的多种可能性时遇到问题.
I'm having an issue trying to check against multiple possibilities in an if statement.
用户输入一个字符串，然后我检查该字符串是否有多种可能性.
The user inputs a string, and then I check that string against multiple possibilities.
if (theString == "Seven" || "seven" || "7")
{
theInt = 7;
cout << "You chose: " << theInt << endl;
}
else if (theString == "Six" || "six" || "6")
{
theInt = 6;
cout << "You chose: " << theInt << endl;
}
所以这里只是一个我想要完成的简单示例.在我的程序中，这些 if 语句在一个函数中，我正在使用 #include [string].(我什至不确定6"或7"是否可能，但我现在什至无法测试我的代码:(所以现在在我的代码中，如果用户输入 6，我的程序将运行并将值 7 分配给 theInt.有什么想法吗?
So there's just a quick example of what I'm trying to accomplish. In my program, these if statements are in a function, and I am using #include [string]. (I'm not even sure if "6" or "7" is possible, but I can't even test my code right now :( So right now in my code, if the user input 6, my program would run and assign a value of 7 to theInt. Any ideas?
谢谢.
推荐答案
你不能像在 C++ 中那样将一个变量与多个值进行比较.你应该这样做:
You cannot compare a variable against multiple values like that in C++. You should be doing:
if (theString == "Seven" || theString == "seven" || theString == "7")
{
theInt = 7;
cout << "You chose: " << theInt << endl;
}
else if (theString == "Six" || theString == "six" || theString == "6")
{
theInt = 6;
cout << "You chose: " << theInt << endl;
}
这篇关于if语句中的C ++多个字符串的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！