consonant-vowel

#include<stdio.h>
int main()
{
char c;
int isLowerVowel, isUpperVowel;
printf("Enter an alphabet: ");
scanf("%c",&c);

isLowerVowel = (c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u');

isUpperVowel = (c == 'A' || c == 'E' || c == 'I' || c == 'O' || c == 'U');

if (isLowerVowel && isUpperVowel)
printf("%c is a vowel", c);

else if((c >= 'a' || c== 'A')&& c <= 'Z')
printf("\n not a alphabet\n");

else
printf("%c is a consonant", c);

return 0;
}