C语言的字符串  C++的字符串

头文件：

#include<string.h>   //c
#include<string>     //C++
#include<cstring>    //C++

 

 比较string的大小

 两个string对象相加

 使用字符串对象来存放字符串

 两个string对象相加

string str = "Hello,";
string phrase = "world ";

string s = str + phrase;
str += phrase;//相当于str = str + phrase

cout << s << endl;
cout << str << endl;

 

 

#include<string>
#include<string.h> // 或
#include<cstring>
using namespace std;
int main()
{
	char str[] = ["tulun}; // str 是数组，存储字符
	int len = strlen(str);
	string sl = "tulun"; // 字符串

	for (int i = 0; i < len; ++i)
	{
		cout << str[i];
	}
		
	// s1.1ength(); // s1.size();
	for (int i = 0; i < s1.size(); ++i)
	{
		cout << sl[i];
	}
	
	cout << s1 << end1; 
	s1 = "he11o";
	cout << s1 << end1; 
	s1 += "tulun";
	cout << s1 << end1;
	cin >> s1; // new data // 空格为中止符
	cout<<s<<end1;
}