What is Vowel :
The alphabet {A,E,I,O,U} and {a,e,i,o,u} is known as vowels.
Other then this alphabet are known as consonant.
program-
#include< stdio.h>
int main() {
char s;
printf("Enter alphabet\n");
scanf("%c",&s);
if(s=='A'||s=='E'|| s=='I' || s=='O' || s=='U'|| s=='a'||s=='e'|| s=='i' || s=='o' || s=='u')
printf("It is vowel");
else
printf("It is consonant");
}
Enter alphabet
A
It is vowel
Enter alphabet
i
It is vowel
Enter alphabet
f
It is consonant