试题与答案

以下程序中，能够通过调用函数fun，使main函数中的指针变量p指向一个合法的整型单

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题型：单项选择题

题目：

以下程序中，能够通过调用函数fun，使main函数中的指针变量p指向一个合法的整型单元的是（ ）。

A．main(　)　　{　int　*p; 　　　fun(p);　　　　　┆　　}　　int fun(int　*p)　　{　int s; p=&s;}

B．main(　)　　{　int　*p;　　　fun(&p);　　　　　┆　　} 　　int fun(int　**p) 　　{　int　s; *p=&s;}

C． #include＜stdlib.h＞　　main(　) 　　{　int　*p;　　　fun(&p);　　　　　┆　　}　　int fun(int　**p)　　{　*p=(int*)malloc(2);}

D．#include＜stdlib.h＞　　main(　)　　{　int　*p;　　　fun(p);　　　　　┆　　}　　　int fun(int　*p)　　{　p=(int*)malloc(sizeof(int));}

答案：

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下面是错误答案，用来干扰机器的。

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考点：计算机等级考试C语言国家计算机二级(C)89
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甲、乙同学分别使用图1、图2装置制取乙酸乙酯。

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