text: /*P9.16 Call by value*/
  #include<stdio.h>
  void value(int x,int y);
  int main(void)
  {
  	int a=5,b=8;
  	printf("a=%d,b=%d\n",a,b);
  	value(a,b);
  	printf("a=%d,b=%d\n",a,b);
  	return 0;
  }
  void value(int x,int y)
  {
  	x++;
  	y++;
  	printf("x=%d,y=%d\n",x,y);
  }