基础练习 字符串对比

 1 #include<iostream>
 2 #include<string>
 3 #include <algorithm>
 4 using namespace std;
 5 //author:zq
 6 int main(){
 7     string s1,s2;
 8     cin>>s1>>s2;
 9     int h1,h2,flag;
10     h1=s1.length();
11     h2=s2.length();
12     if(h1!=h2){
13         flag=1;
14     }else if(s1==s2){
15         flag=2;
16     }else{
17         transform(s1.begin(), s1.end(), s1.begin(), ::toupper);
18         transform(s2.begin(), s2.end(), s2.begin(), ::toupper);
19         if(s1==s2){
20             flag=3;
21         }
22         else{
23             flag=4;
24         }
25     }
26     cout<<flag;
27     return 0;
28 }