C++ 在字符数组中搜索子字符串

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时间:2020-08-27 23:15:57  来源:igfitidea点击:

searching substrings in char array

c++

提问by user3113716

As I know there is a function in C++ string which performs substring search: string1.find(string2).

据我所知,C++ 字符串中有一个函数可以执行子字符串搜索:string1.find(string2)。

Is there any way to perform the same action in char? Below is my question:

有没有办法在char中执行相同的操作?下面是我的问题:

    #include <iostream>
    #include <cstring>
    using namespace std;
    int main()
    { 
      char a[]="hello world!";
      char b[]="el";
      //find substring b[] in a[]


    }

let's say i need to find substring "el" in the string, is it possible to do that?

假设我需要在字符串中找到子字符串“el”,可以这样做吗?

回答by Elixir Techne

char *output = NULL;
output = strstr (a,b);
if(output) {
    printf("String Found");
}

回答by Rohit Jose

This should work:

这应该有效:

char a[]="hello world!";
char b[]="el";
//find substring b[] in a[]
string str(a);
string substr(b);

found = str.find(substr);