C与C++中string的区别与联系

转载于 2014-09-28 16:03:07 发布 · 552 阅读

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本文探讨了C和C++字符串类型的互操作性，详细解释了如何将C字符串复制到C++字符串中，并通过示例展示了从C++字符串回传C字符串的过程。通过代码实现，演示了字符串赋值、复制和打印的基本操作。

The good things about the two different strings types is that they are interoperable; you can copy from C to C++ or back again. C strings can be assigned to C++ strings directly and C++ strings have a function c_str() that returns the C string equivalent. This example shows a C string that is copied to a C++ string, printed out with cout then copied back into another C string and printed out using printf.

for example

#include <iostream>
#include <string>

int main(int argc, char* argv[])
{
    char * name="My Name is David";
    std::string cppname=name;
    std::cout << cppname << std::endl;
    char cname[20];
    strcpy(cname,cppname.c_str());
    printf("Again, my name is %s",cname);
    return 0;