用c语言写能实现上述功能的中文小型系统

以下是一个使用C语言实现学生成绩统计管理系统的简单示例：

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

// 定义学生结构体
typedef struct {
    int studentID;
    char name[50];
    char gender[10];
    char className[50];
    float chineseScore;
    float mathScore;
    float englishScore;
    float databaseScore;
} Student;

// 全局变量
Student students[100];
int studentCount = 0;

// 函数声明
void addStudent();
void editStudent();
void deleteStudent();
void displayStudents();
void calculateAverageScore();
void listFailingStudents();
void exitSystem();

int main() {
    int choice;

    do {
        printf("============== 学生成绩统计管理系统 ==============\n");
        printf("1. 录入学生信息\n");
        printf("2. 修改学生信息\n");
        printf("3. 删除学生信息\n");
        printf("4. 显示学生信息\n");
        printf("5. 统计平均成绩\n");
        printf("6. 列出不及格学生\n");
        printf("7. 退出系统\n");
        printf("请输入你的选择：");
        scanf("%d", &choice);

        switch (choice) {
            case 1:
                addStudent();
                break;
            case 2:
                editStudent();
                break;
            case 3:
                deleteStudent();
                break;
            case 4:
                displayStudents();
                break;
            case 5:
                calculateAverageScore();
                break;
            case 6:
                listFailingStudents();
                break;
            case 7:
                exitSystem();
                break;
            default:
                printf("无效的选择！请重新输入。\n");
        }

        printf("\n");
    } while (choice != 7);

    return 0;
}

void addStudent() {
    Student newStudent;

    printf("请输入学号：");
    scanf("%d", &newStudent.studentID);
    printf("请输入姓名：");
    scanf("%s", newStudent.name);
    printf("请输入性别：");
    scanf("%s", newStudent.gender);
    printf("请输入班级：");
    scanf("%s", newStudent.className);
    printf("请输入语文成绩：");
    scanf("%f", &newStudent.chineseScore);
    printf("请输入数学成绩：");
    scanf("%f", &newStudent.mathScore);
    printf("请输入英语成绩：");
    scanf("%f", &newStudent.englishScore);
    printf("请输入数据库成绩：");
    scanf("%f", &newStudent.databaseScore);

    students[studentCount++] = newStudent;

    printf("学生信息录入成功！\n");
}

void editStudent() {
    int studentID, found = 0;

    printf("请输入要修改的学生学号：");
    scanf("%d", &studentID);

    for (int i = 0; i < studentCount; i++) {
        if (students[i].studentID == studentID) {
            printf("请输入修改后的信息：\n");

            printf("姓名：");
            scanf("%s", students[i].name);
            printf("性别：");
            scanf("%s", students[i].gender);
            printf("班级：");
            scanf("%s", students[i].className);
            printf("语文成绩：");
            scanf("%f", &students[i].chineseScore);
            printf("数学成绩：");
            scanf("%f", &students[i].mathScore);
            printf("英语成绩：");
            scanf("%f", &students[i].englishScore);
            printf("数据库成绩：");
            scanf("%f", &students[i].databaseScore);

            found = 1;
            printf("学生信息修改成功！\n");
            break;
        }
    }

    if (!found) {
        printf("未找到该学生的信息！\n");
    }
}

void deleteStudent() {
    int studentID, found = 0;

    printf("请输入要删除的学生学号：");
    scanf("%d", &studentID);

    for (int i = 0; i < studentCount; i++) {
        if (students[i].studentID == studentID) {
            for (int j = i; j < studentCount - 1; j++) {
                students[j] = students[j + 1];
            }

            found = 1;
            studentCount--;
            printf("学生信息删除成功！\n");
            break;
        }
    }

    if (!found) {
        printf("未找到该学生的信息！\n");
    }
}

void displayStudents() {
    if (studentCount == 0) {
        printf("没有学生信息可显示。\n");
        return;
    }

    printf("学号\t姓名\t性别\t班级\t语文\t数学\t英语\t数据库\n");

    for (int i = 0; i < studentCount; i++) {
        printf("%d\t%s\t%s\t%s\t%.2f\t%.2f\t%.2f\t%.2f\n", students[i].studentID, students[i].name, students[i].gender, students[i].className, students[i].chineseScore, students[i].mathScore, students[i].englishScore, students[i].databaseScore);
    }
}

void calculateAverageScore() {
    if (studentCount == 0) {
        printf("没有学生信息可统计。\n");
        return;
    }

    printf("学号\t姓名\t平均成绩\n");

    for (int i = 0; i < studentCount; i++) {
        float averageScore = (students[i].chineseScore + students[i].mathScore + students[i].englishScore + students[i].databaseScore) / 4.0;
        printf("%d\t%s\t%.2f\n", students[i].studentID, students[i].name, averageScore);
    }
}

void listFailingStudents() {
    if (studentCount == 0) {
        printf("没有学生信息可统计。\n");
        return;
    }

    printf("学号\t姓名\t不及格课程\n");

    for (int i = 0; i < studentCount; i++) {
        if (students[i].chineseScore < 60) {
            printf("%d\t%s\t语文\n", students[i].studentID, students[i].name);
        }
        if (students[i].mathScore < 60) {
            printf("%d\t%s\t数学\n", students[i].studentID, students[i].name);
        }
        if (students[i].englishScore < 60) {
            printf("%d\t%s\t英语\n", students[i].studentID, students[i].name);
        }
        if (students[i].databaseScore < 60) {
            printf("%d\t%s\t数据库\n", students[i].studentID, students[i].name);
        }
    }
}

void exitSystem() {
    printf("感谢使用学生成绩统计管理系统，再见！\n");
    exit(0);
}

这个示例包含了录入学生信息、修改学生信息、删除学生信息、显示学生信息、统计平均成绩、列出不及格学生等功能。你可以根据实际需求进行修改和扩展。注意，这只是一个简单的示例，并没有进行输入验证和错误处理，实际开发中需要考虑更多的情况。