C++ Primer（第5版） 练习 3.39

练习 3.39 编写一段程序，比较两个string对象。再编写一段程序，比较两个C风格字符串的内容。

环境：Linux Ubuntu（云服务器）

工具：vim

 

代码块

/*************************************************************************> File Name: ex3.39.cpp> Author: > Mail: > Created Time: Thu 01 Feb 2024 02:41:54 PM CST************************************************************************/#include<iostream>
#include<cstring>
using namespace std;int main(){string s1, s2;cout<<"Enter string1: ";getline(cin, s1);cout<<"Enter string2: ";getline(cin, s2);if(s1 == s2){cout<<"string1 is equal to string2."<<endl;}else if(s1 > s2){cout<<"string1 is greater than string2."<<endl;}else{cout<<"string1 is less than string2."<<endl;}char s3[80];char s4[80];cout<<"Enter s3: ";cin.getline(s3, sizeof(s3));fflush(stdin);cout<<"Enter s4: ";cin.getline(s4, sizeof(s4));if(strcmp(s3, s4) == 0){cout<<"s3 is equal to s4."<<endl;}else if(strcmp(s3, s4) > 0){cout<<"s3 is greater than s4."<<endl;}else{cout<<"s3 is less than s4."<<endl;}return 0;
}

运行结果显示如下