C Program - Check vowel

#include <stdio.h>
#include <conio.h>

int main()
{
    char ch;

    printf("Input 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;
    /*if ch matches any case then it prints & breaks the execution */
    default:
        printf("%c is not a vowel.\n", ch);
        /*if the ch is not from the cases then prints ch is not a vowel */
    }

    getch();
    return 0;
}

Output

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