c语言报错 求助

#include<stdio.h>
#include<math.h>
#include<string.h>
int sushu(int n)
{
	if(n==2) return 1;
	if(n%2==0) return 0;
	for (int i=0;i<sqrt(n);i++){
		if (n%i==0) return 0;
	}
	return 1;
 } 
 
 int main()
 {
 	char s[101];
 	int cnt[200],max=0,min=100;
	for (int i=0;i<200;i++){
		cnt[i]=0;
	}
 	scanf("%s",s);
 	for (int i=0;i<strlen(s)&&cnt[s[i]]!=0;i++){
 		cnt[s[i]]++;
 		if(cnt[s[i]]>max) max=cnt[s[i]];
 		if(cnt[s[i]]<min) min=cnt[s[i]];
	 }
	int judge=max-min;
	if(sushu(judge)){
		printf("Lucky Word\n%d",judge);
	}else{
		printf("No Answer\n0");
	}
 	return 0;
 }