#include < stdio.h>

int main()
{
    char ch;

    printf("Enter any alphabet: ");
    scanf("%c", &ch);

    switch(ch)
    {
        case 'a': 
            printf("Vowel");
            break;
        case 'e': 
            printf("Vowel");
            break;
        case 'i': 
            printf("Vowel");
            break;
        case 'o': 
            printf("Vowel");
            break;
        case 'u': 
            printf("Vowel");
            break;
        case 'A': 
            printf("Vowel");
            break;
        case 'E': 
            printf("Vowel");
            break;
        case 'I': 
            printf("Vowel");
            break;
        case 'O': 
            printf("Vowel");
            break;
        case 'U': 
            printf("Vowel");
            break;
        default: 
            printf("Consonant");
    }
getch();
}

Program Explanation

Step 1 : Include header files (#include< stdio.h> and #include< conio.h>).

Step 2 : Start with main function with return type.

Step 3 : parenthesis to start and end the program { }.

Step 4 : declare variables with data type i.e, 'ch' is an character type so we use "char" data type.

Step 5 : Use output function printf() to print the output on the screen.

Step 6 : Use input function scanf() to get input from the user.

Step 7 : here, we have check vowel or consonant using switch case, Enter any alphabet:. we have press a. it was go to case 1. then the statement was right. then print "Volew". otherwish , print "Consonant"

Step 8 : using getch() function to hold the screen.