C ++将字符串转换为char数组 [英] C++ convert strings to char arrays

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问题描述

我想输入2个字符串,因此可以使用 getline(cin,s)(这样我就可以选择整行,直到' \n'),然后我想搜索第二个数组是否包含第一个数组的单词,而不使用 string :: find() strstr()
但是我仍然找不到将字符串转换为数组的方法

I want to have 2 strings as input so I can use getline(cin,s) (so I can pick the whole line until '\n') and then I want to search the second array if it contains the word of the first array without using string::find() or strstr(). But I still can't find a way to either convert strings to arrays

int main()
{
    string s;
    string s2;
    char array[50];
    char array2[50];

    cout<<"Give me the first word"<<endl;
    getline(cin,s);

    cout<<"Give me the text"<<endl;
    getline(cin.s2);

    array=s;
    array2=s2;
}

我想的第二种方法是从数组开始做这项工作:

The second way I was thinking was doing the job from the start with arrays:

char array[50];
cin.getline(array,50);

但是如果我使用直数组,有什么办法可以像我们一样找到数组的长度在弦上?

But if I use straight arrays is there any way I can find the length of the array like we do on strings?

//example
string s;
int x;

getline(cin,s);
x=line.length();


推荐答案

请不要这样做,因为您不会t 需要做到这一点。

Just don't do it, because you don't need to do it.

您可以使用 c_str() 函数将 std :: string 转换为char数组,但是在您的情况下这是不必要的。对于查找元素的情况(我认为这是您所需要的),可以使用字符串的 operator [] 并将其视为普通数组。

You could use the c_str() function to convert the std::string to a char array, but in your case it's just unnecessary. For the case of finding elements (which I believe is what you need) you can use the string's operator[] and treat it as if it was an ordinary array.

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