🚧 began working on 2.1

assignments/02/02_1.cpp

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+#include <iostream>
+#include <cstdlib>
+#include <time.h>
+
+int check_number(char* number, int* checked_number) {
+    std::size_t pos;
+    *checked_number = std::stoi(number, &pos);
+    return 0;
+}
+
+int guess(int to_guess) {
+    std::cout << "Take a guess!" << std::endl;
+    char* guess;
+    std::cin >> guess;
+    int guess_number;
+    int check = check_number(guess, &guess_number);
+    if (check < 0)
+        return check;
+    if (!guess_number == to_guess) {
+        if (guess_number < to_guess)
+            std::cout << "Your number is too small.";
+        else
+            std::cout << "Your number is too big.";
+        return 0;
+    }
+    return 1;
+}
+
+int play(int max) {
+    srand(time(NULL));
+    int random_number = rand() % (max + 1);
+    int win = 0;
+    int tries = 0;
+    while (win == 0) {
+        tries++;
+        win = guess(random_number);
+    }
+    if (win < 0)
+        return win;
+    return tries;
+}
+
+int main(int argc, char *argv[]) {
+    int max = 10;
+    if (argc > 1) {
+        int check = check_number(argv[1], &max);
+        if (check < 0)
+            return check;
+    } else 
+        std::cout << "Using default max of 10" << std::endl;
+    
+    std::cout << "Do you want to play? (y/n)" << std::endl;
+    char* answer; 
+    std::cin >> answer; 
+    if (answer[0] == 'y') {
+        int check = play(max);
+        if (check < 0) {
+            std::cout << "Something went wrong. :/" << std::endl;
+            return check;
+        } else 
+            std::cout << "Win after " << check << " tries." << std::endl;
+    }
+    else
+        std::cout << "Good night." << std::endl;
+    return 0;
+}

assignments/02/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.11.4)
+project (01)
+
+add_executable(02_1 02_1.cpp)
+#add_executable(01_2 01_2.cpp)