班费收支管理系统c语言

班费收支管理系统可以分为三个模块：收入管理、支出管理以及查询功能。

以下是一个简单的班费收支管理系统的C语言代码示例：

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

// 定义常量
#define MAX_RECORDS 1000
#define MAX_NAME_LENGTH 20

// 定义记录结构体
struct record {
    char name[MAX_NAME_LENGTH];
    int amount;
    char type;
};

// 声明函数
void add_record(struct record records[], int *num_records);
void show_records(struct record records[], int num_records);
void show_balance(struct record records[], int num_records);

int main() {
    struct record records[MAX_RECORDS];
    int num_records = 0;
    int choice;

    while (1) {
        printf("\n班费收支管理系统\n");
        printf("1. 添加记录\n");
        printf("2. 查看所有记录\n");
        printf("3. 查看账户余额\n");
        printf("4. 退出\n");
        printf("请选择操作：");

        scanf("%d", &choice);

        switch (choice) {
            case 1:
                add_record(records, &num_records);
                break;
            case 2:
                show_records(records, num_records);
                break;
            case 3:
                show_balance(records, num_records);
                break;
            case 4:
                exit(0);
            default:
                printf("输入错误，请重新选择操作。\n");
                break;
        }
    }

    return 0;
}

// 添加记录
void add_record(struct record records[], int *num_records) {
    char name[MAX_NAME_LENGTH];
    int amount;
    char type;

    printf("\n添加记录\n");

    printf("请输入姓名：");
    scanf("%s", name);

    printf("请输入金额：");
    scanf("%d", &amount);

    printf("请输入类型（收入-1，支出-2）：");
    scanf("%d", &type);

    struct record r;
    strcpy(r.name, name);
    r.amount = amount;
    r.type = type;

    records[*num_records] = r;
    (*num_records)++;

    printf("记录添加成功！\n");
}

// 查看所有记录
void show_records(struct record records[], int num_records) {
    printf("\n所有记录\n");

    if (num_records == 0) {
        printf("暂无记录。\n");
    } else {
        printf("姓名\t金额\t类型\n");

        for (int i = 0; i < num_records; i++) {
            printf("%s\t%d\t%c\n", records[i].name, records[i].amount, records[i].type);
        }
    }
}

// 查看账户余额
void show_balance(struct record records[], int num_records) {
    printf("\n账户余额\n");

    int income = 0;
    int expense = 0;
    int balance = 0;

    for (int i = 0; i < num_records; i++) {
        if (records[i].type == '1') {
            income += records[i].amount;
        } else {
            expense += records[i].amount;
        }
    }

    balance = income - expense;

    printf("收入：%d元，支出：%d元，账户余额：%d元。\n", income, expense, balance);
}

这个班费收支管理系统可以让用户添加记录、查看所有记录以及查看账户余额。用户可以在程序运行时选择操作，直到选择退出为止。