C++字符串拼接 字符串拼接

C++字符串拼接 字符串拼接

功能描述：
实现在字符串末尾拼接字符串

#include <iostream>
#include <string>
using namespace std;
//string& operator+=(const char* str);	//重载+= 操作符
//string& operator+=(const char c);		//重载+= 操作符
//string& operator+=(const string& str);	//重载+= 操作符
//string& append(const char* s);			//把字符串s连接到当前字符串结尾
//string& append(const char* s, int n);	//把字符串的前n个字符赋给当前的字符串
//string& append(const string& s);		//把字符串s赋给当前字符串
//string& append(int n, char c);			//用n个字符赋给当前字符串

void test01()
{
	string str1 = "我";
	str1 += "爱玩游戏";
	cout << "str1 = " << str1 << endl;
	str1 += ":";
	cout << "str1 = " << str1 << endl;

	string str2 = "LOL DNF";
	str1 += str2;
	cout << "str1 = " << str1 << endl;

	string str3 = "I";
	str3.append(" love ");
	str3.append("game abcde", 4);
	//str3.append(str2);
	cout << "str3 = " << str3 << endl;
	//lol dnf str3 = i love game
	str3.append(str2, 4, 3);	//从下标4位置开始， 截取3个字符，拼接到字符串末尾
	cout << "str3 = " << str3 << endl;
}
int main()
{
	test01();
	return 0;
}

C++字符串拼接 字符串拼接