20151116_monda1.c

#include <stdio.h>
#include <stdlib.h>

int count_vowel(char*);

int main()
{
  char *str1, *str2;
  str1 = "now is the time";
  str2 = "My name is DENDAI Hanako";
  printf("%s,vowel:%d\n", str1, count_vowel(str1));
  printf("%s,vowel:%d\n", str2, count_vowel(str2));
}

int count_vowel(char *s)
{
  int n;
  for(n = 0; *s != '\0'; s++)
    if(*s == 'a' || *s == 'i' || *s == 'u' || *s == 'e' || *s == 'o' ||
       *s == 'A' || *s == 'I' || *s == 'U' || *s == 'E' || *s == 'O')
      n++;
  return n;
}