C++ 我想查看字符串中是否存在字符
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I want to see if a character is present in a string
提问by Cissmayazz
I'm programming a program in C++ (typical game) in which you need to guess a letter and it will check if it is present in a string.
我正在用 C++（典型游戏）编写一个程序，您需要猜测一个字母，然后它会检查它是否存在于字符串中。
For example
例如
Secret String: I like to program.
秘弦：我喜欢编程。
Guess1: 'a'
猜一：'a'
Display: . .... .. .....a...
展示： 。.... .. .....一种...
Etc.
等等。
But i don't know how to see if a character is in this secret string.
但我不知道如何查看一个字符是否在这个秘密字符串中。
I'm using std::string (obligatory)
我正在使用 std::string （强制性）
Any help is appreciated!
任何帮助表示赞赏！
回答by Scharron
Begin by learning searching in a documentation like : http://www.cplusplus.com/reference/string/string/. (Hint : you want to "find" something ... )
首先学习在文档中搜索，例如：http: //www.cplusplus.com/reference/string/string/。（提示：你想“找到”一些东西......）
回答by JRL
You can use find_first_of
您可以使用find_first_of
回答by Amardeep AC9MF
There are several methods in std::string that would help:
std::string 中有几种方法可以提供帮助：
find() rfind() find_first_of() find_last_of() substr()
find() rfind() find_first_of() find_last_of() substr()
回答by JLWarlow
Take a look at string::find
看一下string::find
