[C++知识库]字符串对比（蓝桥杯基础练习）

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#include<bits/stdc++.h>
using namespace std;

int judge1(char *s1,char *s2){
	if(strlen(s1)!=strlen(s2)){
		return 1;
	}
	else{
		return 0;
	}
}

int judge2(char *s1,char *s2){
	int i=0;
	if(strlen(s1)==strlen(s2)){
		while(s1[i]!='\0'){
		if(s1[i]==s2[i]){
			i++;   
		if(s1[i]=='\0'){
				return 2;
				break;
			}                                                                         
		}
		else{
			return 0;
		}
		} 
	}
	else{
		return 0;
	}
}

int judge3(char *s1,char *s2){
	int i=0;
	if(strlen(s1)==strlen(s2)){
		while(s1[i]!='\0'){
		if(s1[i]==s2[i]||(s1[i]+32)==s2[i]||(s1[i]-32)==s2[i]){
			i++;   
		if(s1[i]=='\0'){
				return 3;
				break;
			}                                                                         
		}
		else{
			return 0;
		}
		} 
	}
	else{
		return 0;
	}
}




int main(){
	char s1[11]="\0";
	char s2[11]="\0";
	cin>>s1;
	cin>>s2;
	if(judge1(s1,s2)==1){
		cout<<1;
	}
	else if(judge2(s1,s2)==2){
		cout<<2;
	}
	else if(judge3(s1,s2)==3){
		cout<<3;
	}
	else{
		cout<<4;
	}
	
	
	return 0;
}