Untitled

#include<stdio.h>

#include<ctype.h>
void main()
{
char a[10];
int id, i=1;
printf("\n Enter an identifier:");
gets (a);
if (isalpha(a[0]))
id=1;
else
printf("\n Not a valid identifier"); while (a[i]!= '\0')
{
if(!isdigit(a[i]) &&!isalpha (a[i]))
{
id=0;
break;
}
i++;
}
if(id==1)
printf("\n Valid identifier");
}