/*#include<stdio.h> has i/o routines, but works ok without it */
/* notice that comments are always in between these symbols: /* */

/* all functions return an int unless otherwise specified */
main()
{int n;
 int i;
char c;

 printf("this is an easy program.  Enter 3 numbers\n");
 for (i=0;i<3;i++)
  {scanf("%d",&n);
   printf("Here is the number %d\n",n);
  }
 printf("Now for some characters.  Enter 3 characters.\n");
 scanf("\n"); /* if we hit a return before, skip over it now */


 /* getchar is the function that reads a single char */ 
 /* convert input to lowercase; this example is from K&R, p. 145 */

 i=0;
 while (i<3)
   {c=getchar();
   putchar(isupper(c)?tolower(c):c); /* prints c on the screen */
    printf("\nHere is c's ASCII value %d; here is c %c\n", c, c);
   i++;
   }
 printf("\n");

}