Check vowel

#include<stdio.h>
int main(){
    char x;
    int i,c=0;
    for(i=1;i<=5;i++){
            scanf(" %c",&x);
            if(x=='A'||x=='E'||x=='I'||x=='O'||x=='U'||x=='a'||x=='e'||x=='i'||x=='o'||x=='u'){
                    c++;
            }
    }
    printf("Number of vowel is %d",c);
    return 0;
}