C PROGRAMMING EXAMPLES

c program to check whether input alphabet is a vowel or not

This code checks whether an input alphabet is a vowel or not. Both lower-case and upper-case are checked.

C programming code

#include<stdio.h>
 
main()
{
      char ch;
 
      printf("Enter a character\n");
      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("%c is a vowel.\n", ch);
      else
          printf("%c is not a vowel.\n", ch);
 
      return 0;
}

Output:

Check vowel using switch statement

#include<stdio.h>
 
main()
{
   char ch;
 
   printf("Enter a character\n");
   scanf("%c",&ch);
 
   switch(ch)
   {
      case 'a':
      case 'A':
      case 'e':
      case 'E':
      case 'i':
      case 'I':
      case 'o':
      case 'O':
      case 'u':
      case 'U':
            printf("%c is a vowel.\n", ch);
            break;
      default:
            printf("%c is not a vowel.\n", ch);
   }                     
 
   return 0;
}

Function to check vowel

int check_vowel(char a)
{
    if ( a >= 'A' && a <= 'Z' )
       a = a + 'a' - 'A';   /* Converting to lower case */
 
    if ( a == 'a' || a == 'e' || a == 'i' || a == 'o' || a == 'u')
       return 1;
 
    return 0;
}