[ECP 1016]Switch program 2

//https://www.facebook.com/AminproPastebin

#include <stdio.h>


int main (void)
{

    char a;
    printf("Enter a letter: ");
    scanf("%s", &a);

    switch(a){
              case('a'):
                      printf("It is a vowel");

              case('e'):
                      printf("It is a vowel");

              case('i'):
                      printf("It is a vowel");

              case('o'):
                      printf("It is a vowel");

              case('u'):
                      printf("It is a vowel");

              default:
                      printf("it is not a vowel");
              break;

              }
    getchar();
    return(0);



    }