Question

我想将用户输入与存储在字符串数组中的值进行比较。我的数组是

string colours[] = {"Black","Blue","Green","Orange","Red","Yellow"};

用户输入分配到

CString selectedColor;

如何比较这些值？

Answer 1

我会做什么：

#include <iostream>

int main(void)
{
    std::string colours[] = {"Black","Blue","Green","Orange","Red","Yellow"};
    std::string input;
    std::cin >> input;
    for(const auto& color : colours) //c++11 loop, you can use a regular loop too
    {
        if(input == color)
        {
            std::cout << input << " is a color!" << std::endl;
        }
    }
}

您还可以将CString转换为std::string并对其进行比较，或者将std::string转换为CString并进行比较，但这已经被问及并回答了已经：How to convert CString and ::std::string ::std::wstring to each other?

Answer 2

另一种可能的解决方案，已经进行了所有转换：

std::string colours[] = { "Black", "Blue", "Green", "Orange", "Red", "Yellow" };
CString selectedColor("Blue");

int colours_size = sizeof(colours) / sizeof(colours[0]);
for (int i = 0; i < colours_size; ++i) {
    CString comparedColor(colours[i].c_str());
    if (selectedColor.Compare(comparedColor) == 0) {
        std::cout << "Color found" << std::endl;
    }
}

比较C ++中的两个字符串

2 个答案: