c++ string类
2021/11/7 22:12:33
本文主要是介绍c++ string类,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
一.string类的构造函数
1.需要用到的头文件
#include<iostream> #include<string> using namespace std;
2. 函数实例
string one("Lottery Winner!"); //直接将字符串赋值给string类 cout << one << endl; //Lottery Winner! string two(20,'$'); //输入字符个数和字符 cout << two << endl; //$$$$$$$$$$$$$$$$$$$$ string three(one); //初始化为string one cout << three << endl; //Lottery Winner! one += " oops!"; //在string one后接字符串 cout << one << endl; //Lottery Winner! oops! two = "Sorry ,That was "; //为two重新赋值 three[0]='P'; //修改three[0]元素为 P string four; four = two + three; cout << four << endl; //Sorry ,That was Pottery Winner! char alls[]={"All's well that ends well"}; string five(alls,20); //five初始化为alls的前20个字符 cout << five << "!\n"; //All's well that ends! string six(alls+6,alls+10); //赋值为alls[6]到alls[9](数组名可看成指针) cout << six << ', '; //well, string seven(&five[6],&five[10]); //对象名不可看成指针 cout << seven << "...\n"; //well... string eight(four,7,16); //从four[7]开始,将16个字符复制到eight中 cout << eight << "in motion!" << endl; //That was Pottery in motion!
最终输出结果:
Lottery Winner! $$$$$$$$$$$$$$$$$$$$ Lottery Winner! Lottery Winner! oops! Sorry! That was Pottery Winner! All's well that ends! well, well... That was Pottery in motion!
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