C program to delete vowels from a string

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

int checkvowel(char);  //function declaration

int main()
{
char input[50], output[50];
  int i, j = 0;

  printf("Enter a string\n");
  gets(input);

 for(i = 0; input[i] != '\0'; i++)  //for whole of the input string 
 {
    if(checkvowel(input[i]) == 0)  //check whether function returns 0
{       
      output[j] = input[i]; //if it is a consonant shift it in output array
      j++;                  //increment output index
    }
  }
  output[j] = '\0';
   printf("\n String after deleting vowels: %s\n", output);
 getch();
  return 0;
}

int checkvowel(char c)
{
  switch(c) 
{
    case 'a':
    case 'A':
    case 'e':
    case 'E':
    case 'i':
    case 'I':
    case 'o':
    case 'O':
    case 'u':
    case 'U':
      return 1; //return 1 if is vowel
    default:
      return 0;  // return 0 if it is consonant
  }
}


Output:


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C program to delete vowels from a string