age.c

#include <stdio.h>
#include <stdlib.h>

void main()
{
int age, curryear, birthyear;
  printf ("Enter current year: ");
  scanf ("%d", &curryear);
  printf ("Enter birth year: ");
  scanf ("%d", &birthyear);

//if (curryear - birthyear <=20) /*<- if statement was in the wrong place.*/
{
  age = curryear - birthyear; /*NOTE TO SELF: Removing this line yields a very
                              interesting result.*/
  if (curryear - birthyear <=20) /*NOTE TO SELF: Condition following if statement
                                 must always go in parentheses.*/
//  if (age <=20)/*Easier (more appropriate)if statement (*Lvalue over Rvalue)*/
  printf ("\nAge is: %d\n\n", age);
}
system ("pause");
}