#include
  2 int num_vowels(char*);
  3 void main()
  4 {
  5 char s[10];
  6 int c;
  7 printf("Enter the string...\n");
  8 scanf("%s",s);
  9 c=num_vowels(s);
 10 printf("%d",c);
 11 printf("\n");
 12 }
 13 int num_vowels(char*s)
 14 {
 15 int c=0;
 16 int i;
 17
 18 for(i=0;s[i]!='\0';i++)
 19 if(s[i]=='a'||s[i]=='e'||s[i]=='i'||s[i]=='o'||s[i]=='u'||s[i]=='A'||s[i]=='E'||s[i]=='I'||s[i]=='O'||s[i]=='U')
 20 c++;
 21 return c;
 22 }
 23
 24
 25
 26
 27
 28
~