#include<stdio.h>
/*
 * Example program that demonstrates scope CISC 105 06.20.05 From Tan
 * & D'Orazio pages 291-292 
 * NOTE: THIS IS NOT GOOD PROGRAMMING STYLE
 */

/* Global variable, outside any function definition */
int m = 12;
int function1( int a, int b, int c, int d);

int main() {
  int n = 30;
  int e, f, g, h, i;

  e=1;
  f=2;
  g=3;
  h=4;

  /* Note how the string literal is broken up.*/
  printf("\nBefore the call to function1, \n"
	 "m = %d\n"
	 "n = %d\n"
	 "e = %d\n",
	 m, n, e );

  i = function1(e, f, g, h);
  
  printf("\nAfter the call to function1, \n"
	 "m = %d\n"
	 "n = %d\n"
	 "e = %d\n",
	 m, n, e );

  return 0;
}

int function1( int a, int b, int c, int d ) {
  int n = 400;
  printf("\nIn function1, \n"
	 "m = %d\n"
	 "n = %d\n"
	 "a = %d\n",
	 m, n, a );
  
  m = 999;
  
  if( a >= 1 ) {
    a += b+m+n;
    printf("m = %d after being modified\n", m);
    printf("a = %d after being modified\n", a);
    return a;
  }
  else {
    c += d+m+n;
    return c;
  }
}