C风格字符串

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

int main ()
{
	string s("xiao");
	
	char s3[] = {'C','+','+'};      //C风格字符数组，有NULL才是字符串，
	char s4[] = {'C','+','\0'};     //C风格字符串，
    char s5[] = "C++";              //C风格字符串,后边有一个隐含的\0,

    char *sp = s4;                  // 这是一个指针指向C风格的字符串，

	printf("Hello C!\n");
	cout << "Hello C++ !" << endl;

	const char *sp1 = "xiao cui wo ai ni";
	const char *sp2 = "xiao cui";
    string v1("xiao cui wo ai ni");

	cout << strlen(sp1) << endl;    //strlen() 是C语言计算字符串中的字符，不计算最后的那个\0,
    cout << v1.size() << endl;      // 输出还是17，和上一行输出17一样，

	char k[] = {'c','x','\0'};
	cout << "C: " << strlen(k) << endl;          // 输出是C：2，

	return 0;
}