This C program to check alphabet is vowel or not. Both lower case and upper case are checked alphabet, And find out the vowels to print.
C programming code in an alphabet
#include<stdio.h>
#include<conio.h>
void main()
{
char ch;
clrscr();
printf("\n Enter a character ");
scanf("%c",&ch);
if ( ch == 'a' || ch == 'A' || ch == 'e' || ch == 'E' || ch == 'i' || ch == 'I' || ch =='o' || ch=='O' || ch == 'u' || ch == 'U')
printf("\n %c is a vowel.", ch);
else
printf("\n %c is not a vowel.", ch);
getch();
}
Output:-

C programming code in an alphabet
#include<stdio.h>
#include<conio.h>
void main()
{
char ch;
clrscr();
printf("\n Enter a character ");
scanf("%c",&ch);
if ( ch == 'a' || ch == 'A' || ch == 'e' || ch == 'E' || ch == 'i' || ch == 'I' || ch =='o' || ch=='O' || ch == 'u' || ch == 'U')
printf("\n %c is a vowel.", ch);
else
printf("\n %c is not a vowel.", ch);
getch();
}
Output:-
