16.1.2【string赋值操作】

#include<iostream>
#include<stdlib.h>
#include<string>
using namespace std;


/*
    3.1.3 string赋值操作
        string& operator=(const char* s); //char*类型字符串 赋值给当前的字符串
        string& operator=(const string &s); //把字符串s赋给当前的字符串
        string& operator=(char c); //字符赋值给当前的字符串
        string& assign(const char *s); //把字符串s赋给当前的字符串
        string& assign(const char *s, int n); //把字符串s的前n个字符赋给当前的字符串
        string& assign(const string &s); //把字符串s赋给当前字符串
        string& assign(int n, char c); //用n个字符c赋给当前字符串
*/


void test1()
{
    string s1;
    s1 = "hello world";
    cout << s1 << endl;

    string s2;
    s2 = s1;
    cout << s2 << endl;

    string s3;
    s3 = 'a';
    cout << s3 << endl;

    string s4;
    s4.assign("hi,c++");
    cout << s4 << endl;

    string s5;
    s5.assign("hi,c++", 4);
    cout << s5 << endl;

    string s6;
    s6.assign(s5);
    cout << s6 << endl;

    string s7;
    s7.assign(10, 'b');
    cout << s7 << endl;
}


int main()
{
    test1();

    system("pause");
    return 0;
}