# 5/16-5/30 專案 11128210 林秉宏

- Homework

main

#include <stdio.h>
#include <stdlib.h>
#include <myheader.h>
#define N 10
typedef struct{
    menufunc*func;
    char*desc;
}MenItem;
void printMenu(MenItem mfarr[], int n);

int main()
{
    Person group[N];
    init(group, N);
    MenItem *mfarr[] = {
        {showListToHire, "Show list of positions to be hired"},
        {showHiredByNumber,"Show list of already hired positions (Sort by number)"},
        {showHiredByName,"Show list of already hired positions(Sort by name)"},
        {hirePerson,"Hire a person"},
        {firePerson,"Fire a person"},
        {saveTxtFile,"Save Txt File"},
        {readTxFile,"Read Txt File"},
    };
    int mfNum = sizeof(mfarr) / sizeof(MenItem);
    int n;
    do{
        printMenu(mfarr, mfNum); scanf("%d", &n);
        if(n<=0 || n>mfNum) break;
        mfarr[n-1].func(group, N);
    }while(1);
    return 0;
}
void printMenu()
{
    printf("\n");
    printf("My Sample Function:\n\n");
    for(int i=0; i<n; i++) printf(" %d) %s\n", i+1, mfarr[i].desc);
    printf("\nYour Choice:(0 to quit ");
}

myheader

#ifndef MYHEADER_H_INCLUDED
#define MYHEADER_H_INCLUDED
typedef struct person
{
    int no;
    int hired;
    char name[80];
}Person;
typedef void menufunc(Person g[], int n);
void init(Person group[], int n);
void listAll(Person group[], int n);
void showListToHire(Person g[], int n);
void sortListByNumber(Person group[], int n);
void sortListByName(Person group[], int n);
void showHiredByNumber(Person g[0], int n);
void showHiredByName(Person g[], int n);
void hirePerson(Person g[], int n);
void firePerson(Person g[], int n);
#endif // MYHEADER_H_INCLUDED

init

#include "myheader.h"
void init(Person group[], int n)
{
    for(int i=0; i<n; i++){
        group[i].no = i+1;
        group[i].hired = 0;
        group[i].name[0] = 0;
    }
}

sort

#include <stdlib.h>
#include "myheader.h"
#include "string.h"
int compareNumber(const void*x, const void*y)
{
    Person *p1 = (Person *)x;
    Person *p2 = (Person *)y;
    int pos;
    char *n1 = p1->name, *n2 = p2->name;
    for(pos=0; ; pos++){
        char c1 = n1[pos], c2 = n2[pos];
        if(c1 >= 'a' && c1 <= 'z') c1 += 'A' - 'a';
        if(c2 >= 'a' && c2 <= 'z') c2 += 'A' - 'a';
        if(c1 != c2) return c1-c2;
        if(c1==0 && c2==0) return0;
    }
}
void sortListByNumber(Person group[], int n)
{
    qsort(group, n, sizeof(Person), compareNumber);
}
void sortListByName(Person group[], int n)
{
    qsort(group, n, sizeof(Person), compareName);
}

showHiredByNumber

#include <stdio.h>
#include "myheader.h"
void showHiredByNumber(Person g[0], int n)
{
    sortListByNumber(g, n);
    int cnt = 0;
    printf("Hired Position by Number:");
    for(int i=0; i<n; i++){
        if(g[i].hirde){
            printf("\n %2d %s", g[i].no, g[i].name);
            cnt++;
        }
    }
    if(cnt=0) printf("<Name>");
    printf("\n");
}

showHiredByName

#include <stdio.h>
#include "myheader.h"
void showHiredByName(Person g[], int n)
{
    sortListByName(g, n);
    int cnt = 0;
    printf("Hired Position by Name:");
    for(int i=0; i<n; i++){
        if(g[i].hired){
            printf("\n %2d %s", g[i].no, g[i].name);
            cnt++;
        }
    }
    if(cnt==0) printf("<Name>");
    printf("\n");
}

showListToHire

#include <stdio.h>
#include "myheader.h"
void showListToHire(Person g[], int n)
{
    sortListByNumber(g, n);
    printf("Position to hire:");
    for(int i=0; i<n; i++){
        if(g[i].hired == 0) printf("%d", i+1);
    }
    printf("\n");
}

hirePerson

#include <stdio.h>
#include "myheader.h"
void hirePerson(Person g[], int n)
{
    int p;
    do{
        showListToHire(g, n);
        printf("Which Position to hire:");
        scanf("%d", &p);
    }while(p<=0 || p>10 ||g[p-1].hired != 0);
    char ch;
    int i=0;
    printf("Hire Position %d, name = ", p);
    do{scanf("%c", &ch);}
    while(ch==' ' || ch=='\n');
        g[p-1].name[i++] = ch;
        scanf("%c", &ch);
    while(ch != '\n'){
        g[p-1].name[i++] = ch;
        scanf("%c", &ch);
    }
    g[p-1].name[i] = 0;
    g[p-1].hired = 1;
    printf("Position %d is hired, name = %s\n", p, g[p-1].name);
}

firePerson

#include <stdio.h>
#include "myheader.h"
void firePerson(Person g[], int n)
{
    int p;
    do{
        showHiredByNumber(g, n);
        printf("Which Position to fire:");
        scanf("%d", &p);
    }while(p>0 && p<11 && g[p-1].hired != 1);
        g[p-1].hired = 0;
        g[p-1].name[0] = 0;
        printf("Position %d is fired\n", p);
}

txtFile

#include <stdio.h>
#include "myheader.h"
void saveTxtFile(Person g[], int n)
{
    FILE *fp;
    if((fp=fopen("data.txt", "w")) == NULL){
        printf("File open error!\n");
    }
    else{
        for(int i=0; i<n; i++){
            fprintf(fp, "%d, %d, %s\n", g[i].no, g[i].hired, g[i].name);
        }
        fclose(fp);
        printf("File data.txt saved!\n");
    }
}
void readTxFile(Person g[], int n)
{
    FILE *fp;
    if((fp=fopen("data.txt", "r")) == NULL){
        printf("File open error!\n");
    }
    else{
        for(int p=0; p<n; p++){
            fscanf(fp, "%d, %d", &g[p].no, &g[p].hired);
            char ch;
            int i=0;
            do{
                fscanf(fp, "%c", &ch);
            }while(ch == ' ' || ch == ',');
            while(ch != '\n'){
                g[p].name[i++] == ch;
                fscanf(fp, "%c", &ch);
            }
            g[p].name[i] = 0;
        }
        fclose(fp);
        printf("File data.txt saved!\n");
    }
}