strcpy 没有在此范围内声明？

Question

#include <iostream>
#include <string>
using namespace std;

int main()
{
    char Buffer[20] = {'[=10=]'};

    cout << "Enter a line of text: " << endl;
    string LineEntered;
    getline (cin, LineEntered);

    if ( LineEntered.length() < 20 ){
        strcpy(Buffer, LineEntered.c_str()); // This strcpy. is not declared in scope for some reason.
        cout << "Buffer contains: " << Buffer << endl;
    }

    return 0;
}

这是错误：

main.cpp:14:43: error: 'strcpy' was not declared in this scope

为什么会出现这个错误？

Answer 1

strcpy 函数在包含文件 string.h 中。所以添加：

#include <string.h>

或者，如果您想了解更多 C++，

#include <cstring>

并使用 std::strcpy().

strcpy 没有在此范围内声明？

strcpy was not declared in this scope?

c++

strcpy