C语言----函数指针

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回调函数

1、函数指针做参数
这里写图片描述
2、回调过程

例代码

////  main.m//  C_Project_12////  Created by  on 15/3/26.//  Copyright (c) 2015年 . All rights reserved.//#import <Foundation/Foundation.h>//课堂练习题：写一函数查找成绩90分以上的学员,使⽤用回调函数在姓名后加”⾼高富 帅”。//1.定义结构体类型typedef struct student {    char name[20];    float score;} Student;Student *generateStudentsInfo(int count);Student *generateStudentsInfo(int count) {    Student *stus = malloc(sizeof(Student) * count);    for (int i = 0; i < count; i++) {        printf("请输入第%d个学生的信息\n", i + 1);        printf("姓名:");        scanf("%s", (stus + i)->name);        printf("成绩:");        scanf("%f", &(stus + i)->score);    }    return stus;}void printStudentsInfo(Student *stus, int count);void printStudentsInfo(Student *stus, int count) {    printf("\n---------------------------\n");    for (int i = 0; i < count; i++) {        printf("姓名:%s\t\t\t\t成绩:%.2f\n", (stus + i)->name, (stus + i)->score);    }    printf("\n---------------------------\n");}void modifyName(char *name);void modifyName(char *name) {    strcat(name, "-高富帅");}void searchStudentInfo(Student *stus, int count, float score, void (*point)(char *));void searchStudentInfo(Student *stus, int count, float score, void (*point)(char *)) {    for (int i = 0; i < count; i++) {        if ((stus + i)->score > score) {            point((stus + i)->name);        }    }}int main(int argc, const char * argv[]) {    Student *stus = generateStudentsInfo(2);    printStudentsInfo(stus, 2);    searchStudentInfo(stus, 2, 90, modifyName);    printStudentsInfo(stus, 2);    return 0;}

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