[C++知识库]C语言函数指针练习题1

已有下面代码

#include <stdio.h>

typedef struct Meas_s Meas_t;

struct Meas_s {
    double value;
    void (*dispFunc)(const Meas_t*);
};

写一个函数 void meas_print(const Meas_t* meas) ，它调用在 meas 中指向的函数，以 meas 作为参数。

测试代码1：

void disp(const Meas_t* meas)
{
    printf("%.3f m/s\n", meas->value);
}

Meas_t meas = {2.7777, &disp};
meas_print(&meas);

输出结果1：

2.778 m/s

测试代码2

void disp1(const Meas_t* meas)
{
    printf("%.3f m/s\n", meas->value);
}

void disp2(const Meas_t* meas)
{
    printf("Speed: %.1f metres per second\n", meas->value);
}

Meas_t meas1 = {2.7777, &disp1};
meas_print(&meas1);
Meas_t meas2 = {2.7777, &disp2};
meas_print(&meas2);

输出结果2：

2.778 m/s
Speed: 2.8 metres per second

参考答案：搜微信公众号【有趣理工男】回复：260LM5Q13