18.下面程序的运行结果是( )。# include < stdio.h>void fun(int x,int y,int *cp,int *dp){*cp=x-y; *dp=x+y;)void main( ){int a=1,b=2,c=3,d=4;fun(a,b,&c,&d);printf("%d, %d\n",c,d);}A.-1,2B.3,4с.-1,4D.-1,3