c语言函数回调函数回调

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实现以上功能

首先还是老规矩创建.h文件和.m文件

.h文件声明一下几个函数方法

//创建一个Teacher结构体

typedef struct teacher{

char Name[20];//姓名

char Sex;//性别

int Age; //年龄

int TeacherID;// 编号

float grade;//评分

}Teacher;

//3声明打印Teacher函数

//void printTeacher(Teacher teacher)

void printTeacher(Teacher *tcher,int count);

//定义个函数指针

typedefBOOL (*plus)(Teacher teacher1,Teacher teacher2);

void sortTeachers(Teacher teacher3[],int count,plus pt);

//打印所有老师的函数

void printTeachers(Teacher *teachers,int count);

//分别声明两个比价函数 Teacher姓名的函数(升序)

BOOL compareNameByAscending1(Teacher teacher1,Teacher teacher2);

//分别声明两个比价函数 Teacher姓名的函数（降序）

BOOL compareNameByDescending1(Teacher teacher1,Teacher teacher2);

////分别声明两个比价函数 Teacher员工编号的函数(升序)

//BOOL compareNumberByAscending(Teacher teacher1,Teacher teacher2);

//分别声明两个比价函数 Teacher员工编号的函数(升序)

BOOL compareNumberByAscending2(Teacher teacher1,Teacher teacher2);

//分别声明两个比价函数 Teacher员工编号的函数(降序)

BOOL compareNumberByDescending2(Teacher teacher1,Teacher teacher2);

//分别声明两个比价函数 Teacher员工评分的函数(升序)

BOOL compareScoreByAscending3(Teacher teacher1,Teacher teacher2);

//分别声明两个比价函数 Teacher员工评分的函数(降序)

BOOL compareScoreByDescending3(Teacher teacher1,Teacher teacher2);

//声明一个输出教师数组中为全部男老师的函数

void printMaleTeacher(Teacher *teachers,int count);

//声明一个输出教师数组中为全部女老师的函数

void printFemaleTeacher(Teacher *teachers,int count);

在.m文件作方法实现

void printTeacher(Teacher *tcher,int count)

{

for (int i=0; i<count; i++) {

printf("name=%s ,sex=%c ,Age=%d, TeacherID=%d grade=%.2f\n",tcher[i].Name,tcher[i].Sex,tcher[i].Age,tcher[i].TeacherID,tcher[i].grade);

}

};

//声明老师数组进行排序

void sortTeachers(Teacher teacher3[],int count,plus pt)

{

for (int i =0; i<count; i++) {

for (int j =0; j<count-i-1; j++) {

if (pt(teacher3[j],teacher3[j+1])) {

Teacher temp = teacher3[j+1];

teacher3[j+1] = teacher3[j];

teacher3[j] = temp;

}

};

//打印所有老师的函数

void printTeachers(Teacher *teachers,int count)

{

for (int i =0 ; i<count; i++) {

printf("名字%s性别%c年龄=%d编号%d评分%.2f\n",teachers[i].Name ,teachers[i].Sex,teachers[i].Age,teachers[i].TeacherID, teachers[i].grade);

}

};

//升序方法

BOOL compareNameByAscending1(Teacher teacher1,Teacher teacher2)

{

return strcmp(teacher1.Name,teacher2.Name)>0?YES:NO;

};

//分别声明两个比价函数 Teacher姓名的函数(降序)

BOOL compareNameByDescending1(Teacher teacher1,Teacher teacher2)

{

return strcmp(teacher1.Name, teacher2.Name)<0 ?YES:NO;

};

//分别声明两个比价函数 Teacher员工编号的函数(升序)

BOOL compareNumberByAscending2(Teacher teacher1,Teacher teacher2)

{

return teacher1.TeacherID > teacher2.TeacherID?YES:NO;

};

//分别声明两个比价函数 Teacher员工编号的函数(降序)

BOOL compareNumberByDescending2(Teacher teacher1,Teacher teacher2)

{

return teacher1.TeacherID < teacher2.TeacherID?YES:NO;

};

//分别声明两个比价函数 Teacher员工评分的函数(升序)

BOOL compareScoreByAscending3(Teacher teacher1,Teacher teacher2)

{

return teacher1.grade > teacher2.grade?YES:NO;

};

//分别声明两个比价函数 Teacher员工评分的函数(降序)

BOOL compareScoreByDescending3(Teacher teacher1,Teacher teacher2)

{

return teacher1.grade < teacher2.grade?YES:NO;

};

//声明一个输出教师数组中为全部男老师的函数

void printMaleTeacher(Teacher *teachers,int count)

{

for (int i =0; i<count;i++) {

if (teachers[i].Sex=='w') {

printf("名字%s性别%c年龄=%d编号%d评分%.2f\n",(teachers+i)->Name ,teachers[i].Sex,teachers[i].Age,teachers[i].TeacherID, teachers[i].grade);

}

};

//声明一个输出教师数组中为全部女老师的函数

void printFemaleTeacher(Teacher *teachers,int count)

{

for (int i =0; i<count;i++) {

if (teachers[i].Sex=='f') {

printf("名字%s性别%c年龄=%d编号%d评分%.2f\n",teachers[i].Name ,teachers[i].Sex,teachers[i].Age,teachers[i].TeacherID, teachers[i].grade);

}

};

在main方式调用实现功能

#import <Foundation/Foundation.h>

#import "Teacher.h"

enum FunctionName{

//Teacher 姓名的函数(升序)

CompareNameByAscending1 =1,

//Teacher 姓名的函数（降序）

CompareNameByDescending1,

// Teacher 员工编号的函数(升序)

CompareNumberByAscending2,

// Teacher 员工编号的函数(降序)

CompareNumberByDescending2,

// Teacher 员工评分的函数(升序)

CompareScoreByAscending3,

// Teacher 员工评分的函数(降序)

CompareScoreByDescending3,

//男老师

PrintMaleTeacher,

//女老师

PrintFemaleTeacher

};

int main(int argc,const char * argv[]) {

//1. 创建一对文件Teacher.h Teacher.m

Teacher Teacher[5]={{"zhangsan",'w',25,9587,80},{"lisi",'f',30,9875,78},{"wangwu",'w',28,5679,92},{"kuijia",'f',20,88,80},{"longyang",'f',24,72,100}};

sortTeachers(Teacher,sizeof(Teacher)/sizeof(Teacher[0]),compareNameByAscending1);

printf("输入1:实现按照姓名进行升序排列\n");

printf("输入2:实现按照姓名进行降序排列\n");

printf("输入3:实现按照员工编号进行升序排列\n");

printf("输入4:实现按照员工编号进行降序排列\n");

printf("输入5:实现按照员工评分进行升序排列\n");

printf("输入6:实现按照员工评分进行降序排列\n");

printf("输入7:实现输出所有男老师\n");

printf("输入8:实现输出所有女老师\n");

printf("=======================\n");

enumFunctionName funNa=CompareNameByAscending1;

//int a=0;

while (funNa < 9) {

printf("请输入实现功能对应数字:");

scanf("%d",&funNa);

switch (funNa) {

caseCompareNameByAscending1:

sortTeachers(Teacher,sizeof(Teacher)/sizeof(Teacher[0]),compareNameByAscending1);