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/* Demonstrates local variables. */ 
 
#include  
 
int x = 1, y = 2; 
 
void demo(void); 
 
int main( void ) 
{ 
  printf("\nBefore calling demo(), x = %d and y = %d.", x, y); 
  demo(); 
  printf("\nAfter calling demo(), x = %d and y = %d\n.", x, y); 
 
  return 0; 
} 
 
void demo(void) 
{ 
    /* Declare and initialize two local variables. */ 
 
    int x = 88, y = 99; 
 
    /* Display their values. */ 
 
    printf("\nWithin demo(), x = %d and y = %d.", x, y); 
}