检查一个字符串是否仅包含另一个字符串中的字符 [英] Check if a string contains only the characters in another string

问题描述

我想编写一个函数，确定输入的单词的所有字母是否包含在另一个可接受的字符串中.

I want to write a function that determines if all the letters of an inputted word are contained in another string of acceptable letters.

bool ContainsOnly(std::string inputtedWord, std::string acceptableLetters)
{
    // ... how do I write this?
}

这是我的测试框架:

bool Tester(std::string inputtedWord, std::string acceptableLetters)
{
    if (ContainsOnly(inputtedWord, acceptableLetters)) {
        std::cout << "Good!" << std::endl;
        return true;
    }
    else {
        std::cout << "No good!" << std::endl;
        return false;
    }
}

int main()
{
    std::string acceptableLetters;
    std::string inputtedWord;

    std::cout << "Please input the acceptable letters in your words: " << std::endl;
    std::cin >> acceptableLetters;

    while (inputtedWord != "STOP") 
    {
        std::cout << "Please input the word you would like to test: (type STOP to end testing): " << std::endl;
        std::cin >> inputtedWord;
        Tester(inputtedWord, acceptableLetters);
    }
    return 0;
}

我想要以下输出:

请在您的单词中输入可接受的字母:编码

Please input the acceptable letters in your words: CODING

请输入您要测试的单词:(输入STOP结束测试):COIN

Please input the word you would like to test: (type STOP to end testing): COIN

好！

请输入您要测试的词:(输入STOP结束测试):COP

Please input the word you would like to test: (type STOP to end testing): COP

不好！

推荐答案

您可以使用这是演示.

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