C基础

一、函数指针

//
//  main.c
//  L01Helloc
//
//  Created by zj on 14-6-1.
//  Copyright (c) 2014年 zj. All rights reserved.
//

#include <stdio.h>

void sayHello(){
    printf("Helloc C\n");
}

void sayHello1(int i){
    printf("Hello C  %d\n",i);
}

int main(int argc, const char * argv[])
{
    void (*p)();
    void (*p1)(int i);
    p = sayHello;
    p1 = sayHello1;
    p();
    p1(98);
    return 0;
}

//
//  main.c
//  L01Helloc
//
//  Created by zj on 14-6-1.
//  Copyright (c) 2014年 zj. All rights reserved.
//

#include <stdio.h>

typedef struct {
    int age;
} People;

void sayHello(){
    printf("Helloc C\n");
}

//代表返回值为void ,无传入参数的函数
typedef void (*Func)();


int main(int argc, const char * argv[])
{
    People p;
    p.age = 13;
    Func f = sayHello;
    f();
    
    return 0;
}

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C基础

原文：http://blog.csdn.net/jwzhangjie/article/details/27959577