1. Write a recursive C function that counts the number of vowels in a string. You may wish to call
the is_element function.
Solution
#include <string.h>
int vowels(char *str,int count)
{
if(!*str)
return count;
char ch=lower(*str);
int match=ch=='a' || ch=='e' || ch=='i' || ch=='o' || ch=='u';
return vowels(++str, count+match);
}
int main(void)
{
int i,t, pom;
char str[30];
scanf("%d", &t);
for(i=0;i<t;i++)
{

2. scanf("%29s", str);
pom=vowels(str,0)
printf("%d ", pom);
}
return 0;
}