请帮我用c++写一个简单的财务报表系统

当然可以！下面是一个简单的财务报表系统的C++代码示例：

#include <iostream>
#include <vector>

using namespace std;

struct FinancialStatement {
    string companyName;
    int year;
    double revenue;
    double expenses;
    double profit;
};

void addStatement(vector<FinancialStatement>& statements) {
    FinancialStatement statement;
    
    cout << "公司名称: ";
    cin >> statement.companyName;
    cout << "年份: ";
    cin >> statement.year;
    cout << "收入: ";
    cin >> statement.revenue;
    cout << "支出: ";
    cin >> statement.expenses;
    statement.profit = statement.revenue - statement.expenses;
    
    statements.push_back(statement);
    cout << "财务报表已添加！" << endl;
}

void printStatement(const FinancialStatement& statement) {
    cout << "公司名称: " << statement.companyName << endl;
    cout << "年份: " << statement.year << endl;
    cout << "收入: " << statement.revenue << endl;
    cout << "支出: " << statement.expenses << endl;
    cout << "利润: " << statement.profit << endl;
}

void printAllStatements(const vector<FinancialStatement>& statements) {
    if (statements.empty()) {
        cout << "没有财务报表可打印！" << endl;
    } else {
        for (const FinancialStatement& statement : statements) {
            printStatement(statement);
            cout << endl;
        }
    }
}

int main() {
    vector<FinancialStatement> statements;
    int choice;
    
    do {
        cout << "1. 添加财务报表" << endl;
        cout << "2. 打印所有财务报表" << endl;
        cout << "3. 退出" << endl;
        cout << "请选择操作: ";
        cin >> choice;
        
        switch (choice) {
            case 1:
                addStatement(statements);
                break;
            case 2:
                printAllStatements(statements);
                break;
            case 3:
                cout << "退出财务报表系统！" << endl;
                break;
            default:
                cout << "无效的选择！" << endl;
                break;
        }
        
        cout << endl;
    } while (choice != 3);
    
    return 0;
}

这个简单的财务报表系统包括以下功能：

添加财务报表：用户可以输入公司名称、年份、收入和支出信息，并计算利润。
打印所有财务报表：将所有财务报表的信息打印出来。
退出：退出财务报表系统。

你可以根据实际需求进行修改和扩展。希望对你有帮助