如何自动屏蔽数据

Question

我是 C++ 的初学者。我在从程序中自动屏蔽数据时遇到问题。程序应自动选择要屏蔽的数据。现在，我的程序只能通过插入输入来手动选择需要屏蔽哪些数据。我试图弄清楚，但我无法解决它。下面是我的代码。

#include <iostream>
#include <string>
#include <vector>
#include <iomanip>
#include <time.h>
#include <stdlib.h>

using namespace std;

const int ROW = 7;
const int COL = 7;


string raw[ROW][COL] = {{"Customer ID", "Name", "Premise", "Street No.", "Town", "Meter No.", "Usage (kWh)"},
             {"112", "mike", "87", "Jln 12", "port", "24564532", "466"},
             {"545", "danny", "25", "Jln 24", "casa", "82251928", "578"},
             {"323", "tan", "34", "Jln 36", "cattleya", "12193729", "253"},
             {"843", "jess", "86", "Jln 48", "mount", "98829101", "316"},
             {"218", "jack", "44", "Jln 11", "river", "1927192", "212"},
             {"298", "bob", "99", "Jln 60", "stall", "53328789", "266"}};

void loadData(vector<vector<string> > &data)
{
    for (int i = 0; i < ROW; i++) {
        vector<string> thisrow;
        for (int j = 0; j < COL; j++) {
            thisrow.push_back(raw[i][j]);
        }
        data.push_back(thisrow);
    }
}

void printData(vector<vector<string> > data)
{
    for (int i = 0; i < data.size(); i++) {
        for (int j = 0; j < data[i].size(); j++) {
            cout << setw(8) << left << data[i][j] << "\t";
        }
        cout << endl;
    }
    cout << endl;
}

void swapCol(vector<vector<string> > &data, const int colno, const int x)
{
    for (int i = 0; i < x; i++) {
        int s = (rand() % (data.size()-1)) + 1;
        int r = (rand() % (data.size()-1)) + 1;

        // Swap premise number
        string temp = data[s][colno];
        data[s][colno] = data[r][colno];
        data[r][colno] = temp;
    }
}

void maskCol(vector<vector<string> > &data, const int colno)
{
    for (int i = 1; i < data.size(); i++) {
        for (int j = 0; j < data[i][colno].length(); j++) {
            if (j != 0) {
                if (data[i][colno][j] >= 'a' && data[i][colno][j] <= 'z') data[i][colno][j] = 'z';
                else if (data[i][colno][j] >= 'A' && data[i][colno][j] <= 'Z') data[i][colno][j] = 'Z';
                else if (data[i][colno][j] >= '0' && data[i][colno][j] <= '9') data[i][colno][j] = '9';
            }
        }
    }
}
    return 0;
}

int main(void)
{
    srand(time(0));
    vector<vector<string> > data;
    int operation, input;
    string cust;

    // Insert data into vector
    loadData(data);

    while (true) {

        cout << "Current data:\n";
        printData(data);

        cout << "Available Events:\n";
        cout << "1. Energy Consumption\n";
        cout << "2. Theft Detection\n";
        cout << "\nChoose an event: ";
        cin >> operation;

        if(operation < 2)
        {
            cout << "\nTelco Provider want to know electric consumption.\n";

            switch (operation) {
            case 1:
                cout << "\nWhich attribute to be swapped?\n";
                cout << "\n1. Customer ID\n";
                cout << "2. Customer name\n";
                cout << "3. Premise number\n";
                cout << "4. Street number\n";
                cout << "5. Town\n";
                cout << "6. Meter number\n";
                cout << "7. Power usage\n";
                cout << "\nYour input: ";
                cin >> input;

                swapCol(data, input-1, data.size()/2);

            break;}
        }

        else
        {
            cout << "\nCST want to identify energy consumption for investigation purpose on electric theft.\n";

        switch (operation){
        case 2:
                cout << "Which attribute to be masked?\n";
                cout << "1. Customer ID\n";
                cout << "2. Customer name\n";
                cout << "3. Premise number\n";
                cout << "4. Street number\n";
                cout << "5. Town\n";
                cout << "6. Meter number\n";
                cout << "\nYour input: ";
                cin >> input;

                maskCol(data, input-1);

            break;

            case 3:
                data.clear();
                loadData(data);
            break;

            default:
                cout << "Invalid operation. Please try again.\n\n";
        }


        }
    }

}