Help me in solving EZSPEAK problem

help
,
1

My issue

runtime error

My code

#include <stdio.h>

int main() {
	// your code goes here
	int t;
	int flag=0;
	scanf("%d",&t);
	while(t--)
	{
	    int N;
	    scanf("%d",&N);
	    char s[N];
	    for(int i=0;i<N;i++){
	        scanf("%c",&s[i]);
	    }
	    char c[]={'a','e','i','o','u'};
	    for(int i=0;i<5;i++){
	        for(int j=0;j<=4;i++){
	            if(c[i]==s[j]){
	                flag = 1;
	                break;
	            }
	        }
	    }
	    
	    if(flag==1){
	        printf("YES");
	    }
	    else{
	        printf("NO");
	    }
	    
	}
	return 0;

}

Learning course: Roadmap to 3*
Problem Link: https://www.codechef.com/learn/course/klu-roadmap-3star/KLURMP300A/problems/EZSPEAK