做一个c语言程序要求五、手机通沸录程序设计 总体需求 具有数据插入、修改、删涂、显示、查词和烧计功能的电话薄管理程序。基本功能: 人数不定，数据使用文件存放. 1.记录每位联系人的学号、姓名、性别、工作单位、电话号码和E-mail地址建立单独的条目，存入数据 文件。 2.可对讯录中的性名和电话号码等进行修改。 .可增加或删涂记录 4.习显示所有保存的录5.加入统计功能，可以统计男女或总人数。 6. 加入查间功能，通过性名、学号或电话号码查询到同学的条目. 在开始画面加入简单的菜单便于远择功能。文件格式1.储存数振文件格式 编号姓名性别工作单位电话号码E-mail I李四……,….

好的，这个程序看起来比较简单，需要用到C语言的文件操作和基本的数据结构。以下是一个简单的实现：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define MAX_NAME_LEN 50
#define MAX_WORKPLACE_LEN 100
#define MAX_EMAIL_LEN 100
#define MAX_PHONE_NUM_LEN 20

typedef struct {
    int student_id;
    char name[MAX_NAME_LEN];
    char gender;
    char workplace[MAX_WORKPLACE_LEN];
    char phone_num[MAX_PHONE_NUM_LEN];
    char email[MAX_EMAIL_LEN];
} Contact;

void print_menu();
void insert_contact(FILE *fp);
void modify_contact(FILE *fp);
void delete_contact(FILE *fp);
void display_contacts(FILE *fp);
void count_contacts(FILE *fp);
void search_contacts(FILE *fp);

int main() {
    FILE *fp;
    int choice;
    fp = fopen("contacts.dat", "rb+");
    if (fp == NULL) {
        fp = fopen("contacts.dat", "wb+");
        if (fp == NULL) {
            printf("Failed to open file!\n");
            return 1;
        }
    }
    do {
        print_menu();
        scanf("%d", &choice);
        switch (choice) {
            case 1:
                insert_contact(fp);
                break;
            case 2:
                modify_contact(fp);
                break;
            case 3:
                delete_contact(fp);
                break;
            case 4:
                display_contacts(fp);
                break;
            case 5:
                count_contacts(fp);
                break;
            case 6:
                search_contacts(fp);
                break;
            case 7:
                printf("Thanks for using the program!\n");
                break;
            default:
                printf("Invalid choice!\n");
                break;
        }
    } while (choice != 7);
    fclose(fp);
    return 0;
}

void print_menu() {
    printf("--------------------\n");
    printf("1. Insert contact\n");
    printf("2. Modify contact\n");
    printf("3. Delete contact\n");
    printf("4. Display contacts\n");
    printf("5. Count contacts\n");
    printf("6. Search contacts\n");
    printf("7. Exit\n");
    printf("--------------------\n");
}

void insert_contact(FILE *fp) {
    Contact c;
    printf("Enter student ID: ");
    scanf("%d", &c.student_id);
    printf("Enter name: ");
    scanf("%s", c.name);
    printf("Enter gender (M/F): ");
    scanf(" %c", &c.gender);
    printf("Enter workplace: ");
    scanf("%s", c.workplace);
    printf("Enter phone number: ");
    scanf("%s", c.phone_num);
    printf("Enter email: ");
    scanf("%s", c.email);
    fseek(fp, 0, SEEK_END);
    fwrite(&c, sizeof(Contact), 1, fp);
    printf("Contact added!\n");
}

void modify_contact(FILE *fp) {
    int id;
    Contact c;
    int found = 0;
    printf("Enter student ID to modify: ");
    scanf("%d", &id);
    rewind(fp);
    while (fread(&c, sizeof(Contact), 1, fp) == 1) {
        if (c.student_id == id) {
            printf("Enter new name (or press Enter to keep the old one): ");
            scanf("\n%[^\n]", c.name);
            printf("Enter new gender (M/F or press Enter to keep the old one): ");
            scanf(" %c", &c.gender);
            printf("Enter new workplace (or press Enter to keep the old one): ");
            scanf("\n%[^\n]", c.workplace);
            printf("Enter new phone number (or press Enter to keep the old one): ");
            scanf("%s", c.phone_num);
            printf("Enter new email (or press Enter to keep the old one): ");
            scanf("%s", c.email);
            fseek(fp, -sizeof(Contact), SEEK_CUR);
            fwrite(&c, sizeof(Contact), 1, fp);
            found = 1;
            break;
        }
    }
    if (!found) {
        printf("Contact not found!\n");
    } else {
        printf("Contact modified!\n");
    }
}

void delete_contact(FILE *fp) {
    int id;
    Contact c;
    int found = 0;
    printf("Enter student ID to delete: ");
    scanf("%d", &id);
    rewind(fp);
    FILE *temp_fp = fopen("temp.dat", "wb");
    while (fread(&c, sizeof(Contact), 1, fp) == 1) {
        if (c.student_id != id) {
            fwrite(&c, sizeof(Contact), 1, temp_fp);
        } else {
            found = 1;
        }
    }
    fclose(temp_fp);
    if (!found) {
        printf("Contact not found!\n");
        remove("temp.dat");
    } else {
        printf("Contact deleted!\n");
        remove("contacts.dat");
        rename("temp.dat", "contacts.dat");
    }
}

void display_contacts(FILE *fp) {
    Contact c;
    rewind(fp);
    printf("%-10s %-20s %-10s %-30s %-20s %-30s\n", "ID", "Name", "Gender", "Workplace", "Phone Number", "Email");
    while (fread(&c, sizeof(Contact), 1, fp) == 1) {
        printf("%-10d %-20s %-10c %-30s %-20s %-30s\n", c.student_id, c.name, c.gender, c.workplace, c.phone_num, c.email);
    }
}

void count_contacts(FILE *fp) {
    Contact c;
    rewind(fp);
    int male_count = 0, female_count = 0, total_count = 0;
    while (fread(&c, sizeof(Contact), 1, fp) == 1) {
        if (c.gender == 'M') {
            male_count++;
        } else if (c.gender == 'F') {
            female_count++;
        }
        total_count++;
    }
    printf("Total contacts: %d\n", total_count);
    printf("Male contacts: %d\n", male_count);
    printf("Female contacts: %d\n", female_count);
}

void search_contacts(FILE *fp) {
    int choice;
    Contact c;
    int found = 0;
    printf("Search by:\n");
    printf("1. Student ID\n");
    printf("2. Name\n");
    printf("3. Phone Number\n");
    scanf("%d", &choice);
    switch (choice) {
        case 1:
            printf("Enter student ID to search: ");
            scanf("%d", &c.student_id);
            break;
        case 2:
            printf("Enter name to search: ");
            scanf("%s", c.name);
            break;
        case 3:
            printf("Enter phone number to search: ");
            scanf("%s", c.phone_num);
            break;
        default:
            printf("Invalid choice!\n");
            return;
    }
    rewind(fp);
    printf("%-10s %-20s %-10s %-30s %-20s %-30s\n", "ID", "Name", "Gender", "Workplace", "Phone Number", "Email");
    while (fread(&c, sizeof(Contact), 1, fp) == 1) {
        if ((choice == 1 && c.student_id == c.student_id) ||
            (choice == 2 && strcmp(c.name, c.name) == 0) ||
            (choice == 3 && strcmp(c.phone_num, c.phone_num) == 0)) {
            printf("%-10d %-20s %-10c %-30s %-20s %-30s\n", c.student_id, c.name, c.gender, c.workplace, c.phone_num, c.email);
            found = 1;
        }
    }
    if (!found) {
        printf("No contacts found!\n");
    }
}

程序使用了一个结构体 `Contact` 来保存每位联系人的信息，同时使用了文件来保存所有联系人的信息。在主函数中，打开文件并根据用户的选择执行不同的功能。以下是每个功能的具体实现：

1. `insert_contact`：让用户输入新联系人的信息，并将其添加到文件中。
2. `modify_contact`：让用户输入要修改的联系人的学号，然后查找文件中是否有该联系人。如果找到，让用户输入新信息，并将其更新到文件中。
3. `delete_contact`：让用户输入要删除的联系人的学号，然后查找文件中是否有该联系人。如果找到，将其从文件中删除。
4. `display_contacts`：在屏幕上显示所有联系人的信息。
5. `count_contacts`：统计所有联系人的数量以及男女联系人的数量，并在屏幕上显示。
6. `search_contacts`：让用户选择按照学号、姓名或电话号码查询联系人，然后在文件中查找并在屏幕上显示符合条件的联系人。

程序使用了文件操作函数 `fopen`、`fread`、`fwrite`、`fseek`、`fclose`、`remove` 和 `rename`，以及字符串操作函数 `scanf` 和 `printf`。其中，`scanf` 和 `printf` 的格式化字符串需要根据不同的数据类型进行调整，否则可能会导致输入输出错误。程序还使用了一些基本的流程控制语句和数据结构，需要熟悉这些基本知识才能理解和编写这个程序。