main.cpp

@@ -1,30 +1,101 @@
 #include <iostream>
-#include <cstdlib>
+#include <random>
-#include <ctime>
+#include <chrono>
+
+using string = std::string;
+void ignoreTillLineEnd();
+string promptfs(string);
+int promptfi(string);
+string guessRank(int);
 
 int main()
 {
-    using std::cout;
+    std::mt19937 rand {std::random_device{}()};
-    using std::cin;
+    std::uniform_int_distribution<int> clamp {1, 100};
-    srand(time(nullptr));
+    string name {promptfs("Enter your name:")};
-    int gcount{ 1 };
+    std::cout << "Hello " << name << ", welcome to guess the number.\n";
-    int n { 20 };
+    int guesses {};
-    int secret { rand()%n + 1 };
+    int num {clamp(rand)}, ent {};
-    cout << "Guess a number between 1 and " << n << ": ";
+    do {
-    int guess;
+        if (guesses++ > 0) {
-    cin >> guess;
+            if (ent > num)
-    while (guess != secret)
+                std::cout << "You Guessed Too High!\n";
-    {
+            else
-        if (guess > secret) {
+                std::cout << "You Guessed Too Low!\n";
-            cout << "Number too big ; ";
-        } else {
-            cout << "Number too small ; ";
         }
-        gcount++;
+        ent = promptfi("Enter your guess:");
-        cout << "Guess again: ";
-        cin >> guess;
     }
-    cout << "Correct!\n";
+    while (num != ent);
-    cout << "Took " << gcount << " tries.\n";
+    std::cout << "Well done " << name << ", you guessed correctly!\n";
+    std::cout << "You took " << guesses << " guesses, rank " << guessRank(guesses) << " .\n";
     return 0;
 }
+
+void ignoreTillLineEnd() {
+    std::cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
+}
+
+string promptfs(string msg) {
+    bool once {};
+    string toret {};
+    do {
+        if (once) {
+            std::cin.clear();
+            ignoreTillLineEnd();
+            std::cout << "Input Failure!\n";
+        }
+        std::cout << msg << "\n";
+        std::cin >> toret;
+        once = true;
+    }
+    while (std::cin.fail());
+    ignoreTillLineEnd();
+    return toret;
+}
+
+int promptfi(string msg) {
+    bool once {};
+    int toret {};
+    do {
+        if (once) {
+            std::cin.clear();
+            ignoreTillLineEnd();
+            std::cout << "Input Failure!\n";
+        }
+        std::cout << msg << "\n";
+        std::cin >> toret;
+        once = true;
+    }
+    while (std::cin.fail());
+    ignoreTillLineEnd();
+    return toret;
+}
+
+string guessRank(int g) {
+    switch (g) {
+    case 0:
+        return "U";
+    case 1:
+        return "A^";
+    case 2:
+        return "A*";
+    case 3:
+        return "A";
+    case 4:
+    case 5:
+        return "B";
+    case 6:
+    case 7:
+        return "C";
+    case 8:
+    case 9:
+    case 10:
+        return "D";
+    case 11:
+    case 12:
+    case 13:
+        return "E";
+    default:
+        return "F";
+    }
+}