题型:单项选择题 请选出以下程序的输出结果______。#include<stdio.h>sub(x,y,z)int x,y,*z;*z=y-x;main() int a,b,c; sub(10,5,&A.;sub(7,a,&b);sub(a,b,&c); printf("%d,%d,%d\n",a,b,c);A) 5,2,3B.-5,-12,-7C.-5,-12,-17D.5,-2,-7 查看答案