View Code of Problem 3878

#include<stdio.h>
#include<string.h>

int main(void){
	char str[1005];
	int m;
	scanf("%d",&m);
	while(m!=0){
		while(m--){
			gets(str);
			int len=strlen(str);
			for(int i=0;i<len-3;i++){
				if(str[i]=='c'||str[i]=='C'){
					if(str[i+1]=='h'||str[i+1]=='H'){
						if(str[i+2]=='a'||str[i+2]=='A'){
							if(str[i+3]=='o'||str[i+3]=='O'){
								puts(str);
								break;
							}
						}
					}
				}
			}
		}
		scanf("%d",&m);
	}
}

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