c program to count the number of vowels in a given string
#include
#include
void main()
{
int i;
char s1[20];
clrscr();
printf("\n Enter string:");
gets(s1);
for(i=0;s1[i]!='\0';i++)
if(s1[i]=='A'||s1[i]=='E'||s1[i]=='I'||s1[i]=='O'||s1[i]=='U'||s1[i]=='a'||s1[i]=='e'||s1[i]=='i'||s1[i]=='o'||s1[i]=='u')
printf("%c",s1[i]);
getch();
}