蓝桥杯 试题 基础练习 字符串对比

#include<bits/stdc++.h>

using namespace std;

int main(){
	string s1,s2;
	cin>>s1;
	cin>>s2;
	int l1 = s1.length();
	int l2 = s2.length();
	if(l1 != l2) cout<<"1"<<endl;
	else{
		if(s1 == s2){
			cout<<"2"<<endl;
		//	return 0;
		}
		else{
			for(int i=0;i<l1;i++){
				if(s1[i] >= 'A'&& s1[i] <= 'Z'){
					s1[i] += 32;
				}
				if(s2[i] >= 'A'&& s2[i] <= 'Z'){
					s2[i] += 32;
				}
			}
			if(s1 == s2) cout<<"3"<<endl;
			else{
				cout<<"4"<<endl; 
			}
		}
		
	}
	return 0;
}