cpp-practice/generatefiles.cpp at main · jitaditya004/cpp-practice · GitHub

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#include <iostream>
#include <fstream>
#include <cstdlib>
#include <ctime>
using namespace std;

const int SIZE = 100;

void generateAscending(const char* filename) {
    ofstream file(filename);
    if (!file) {
        cout << "Error opening " << filename << endl;
        return;
    }
    for (int i = 1; i <= SIZE; i++) {
        file << i << " ";
    }
    file.close();
}

void generateDescending(const char* filename) {
    ofstream file(filename);
    if (!file) {
        cout << "Error opening " << filename << endl;
        return;
    }
    for (int i = SIZE; i >= 1; i--) {
        file << i << " ";
    }
    file.close();
}

void generateRandom(const char* filename) {
    ofstream file(filename);
    if (!file) {
        cout << "Error opening " << filename << endl;
        return;
    }

    srand(time(0));
    for (int i = 0; i < SIZE; i++) {
        int num = rand() % 1000; // Random numbers from 0 to 999
        file << num << " ";
    }
    file.close();
}

int main() {
    generateAscending("ascending.txt");
    generateDescending("descending.txt");
    generateRandom("random.txt");

    cout << "Files generated successfully.\n";
    return 0;
}