vowels

#include <stdio.h>
#include <string.h>
int main() {
  char string[1000], c=0;
  int  i, tamanho;
  printf("Digite a string");
  fgets(string, 1000, stdin);
  tamanho=strlen(string);
  for(i=0; i<=tamanho; i++){
    if(string[i]=='a' ||string[i]=='e' || string[i]=='i' || string[i]=='o' || string[i]=='u' ){
      c++;
    }
  }
  printf("Ha %i nessa string", c);
  return 0;
}