C Programming Code Examples
C > If Else and Switch Case Code Examples
C program to check vowel or consonant
/* C program to check vowel or consonant
Write a C program to check whether an alphabet is vowel or consonant using if else. How to check vowels and consonants using if else in C programming. C Program to input a character from user and check whether it is vowel or consonant.
English alphabets a, e, i, o and u both lowercase and uppercase are known as vowels. Alphabets other than vowels are known as consonants.
Input a character from user. Store it in some variable say ch.
Check conditions for vowel i.e. if(ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u'), then it is vowel.
If character is alphabet but not vowel then it is consonant. Means check ch >= 'a' && ch <= 'z' then, it is consonant.
If it is neither vowel nor consonant, then it is not alphabet.
Character in C is represented inside single quote. Do not forget to add single quote whenever checking for character constant.
Let us implement the logic with both lower and upper case alphabets. */
#include <stdio.h>
int main()
{
char ch;
/* Input character from user */
printf("Enter any character: ");
scanf("%c", &ch);
/* Condition for vowel */
if(ch=='a' || ch=='e' || ch=='i' || ch=='o' || ch=='u' ||
ch=='A' || ch=='E' || ch=='I' || ch=='O' || ch=='U')
{
printf("'%c' is Vowel.", ch);
}
else if((ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z'))
{
/* Condition for consonant */
printf("'%c' is Consonant.", ch);
}
else
{
/*
* If it is neither vowel nor consonant
* then it is not an alphabet.
*/
printf("'%c' is not an alphabet.", ch);
}
return 0;
}
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