Create main.cpp

Author: fufic123

cpp_homework_15/main.cpp

@@ -0,0 +1,182 @@
+//
+//  main.cpp
+//  cpp_homework_15
+//
+//  Created by Mark Semenov on 11.07.2022.
+//
+
+#include <iostream>
+using namespace std;
+
+int random(int MIN, int MAX) {
+    int k = MAX - MIN + 1;
+    return MIN + rand() % k;
+}
+
+int main(int argc, const char * argv[]) {
+    //Task 1
+    const int s = 5;
+    int n[s] = {};
+    for (int i = 0; i < s; i++) {
+        cout << "Enter number #" << i + 1 << ": ";
+        cin >> n[i];
+    }
+    for (int i = s - 1; i >= 0; i--) {
+        cout << n[i] << "\n";
+    }
+    cout << "\n";
+
+    //Task 2
+    const int s = 20;
+    int n[s] = {};
+    srand(time(NULL));
+    rand();
+    for (int i = 0; i < s; i++) {
+        n[i] = rand();
+        if (i % 2 == 0) {
+            cout << n[i] << "\n";
+        }
+    }
+    cout << "\n";
+
+    //Task 3
+    const int s = 10;
+    int n[s] = {}, a = 0, sum = 0;
+    while (true) {
+        srand(time(NULL));
+        for (int i = 0; i < s; i++) {
+            n[i] = random(-10, 10);
+            if (n[i] > 0) {
+                a++;
+                sum += n[i];
+            }
+        }
+        break;
+    }
+    cout << "Quantity = " << n << "\nSum = " << sum << "\nAverage = " << (double)sum / a << "\n\n";
+
+    //Task 4
+    const int s = 100;
+    int symbol[s] = {}, letter = 0, num = 0, symb = 0;
+    while (true) {
+        srand(time(0));
+        for (int i = 0; i < s; i++) {
+            symbol[i] = random(0, 127);
+            if (symbol[i] >= 48 && symbol[i] <= 57) {
+                num++;
+                cout << (char)symbol[i] << ", ";
+            }
+            else if ((symbol[i] >= 65 && symbol[i] <= 90) || (symbol[i] >= 97 && symbol[i] <= 122)) {
+                letter++;
+                cout << (char)symbol[i] << ", ";
+            }
+            else {
+                symb++;
+                cout << (char)symbol[i] << ", ";
+            }
+        }
+        break;
+    }
+    cout << "\n";
+    cout << "Letters are " << letter << "%\nNumbers are " << num << "%\nSymbols are " << symb << "%\n\n";
+
+    //Task 5
+    const int s = 100;
+    int n[s] = {}, a, c = 0;
+    cin >> a;
+    while (true) {
+        srand(time(NULL));
+        for (int i = 0; i < s; i++) {
+            n[i] = rand();
+            if (n[i] == a) {
+                c++;
+            }
+        }
+        break;
+    }
+    cout << "Number repeats " << c << " times" << "\n\n";
+
+    //Task 6
+    const int s = 20;
+    int n[s] = {}, count, sum = 0;
+    while (true) {
+        srand(time(NULL));
+        for (int i = 0; i < s; i++) {
+            n[i] = random(-10, 30);
+            if (n[i] < 0) {
+                count = i;
+                break;
+            }
+        }
+        for (int i = count; i < s; i++) {
+            n[i] = random(-10, 30);
+            sum += n[i];
+        }
+        break;
+    }
+    cout << "Sum after first negative number is equal to " << sum << "\n\n";
+
+    //Task 7
+    const int s = 20;
+    int n[s] = {}, max = 0, min, max_i, min_i;
+    while (true) {
+        srand(time(NULL));
+        for (int i = 0; i < s; i++) {
+            n[i] = rand();
+            cout << n[i] << " ";
+            if (n[i] > max) {
+                max = n[i];
+                max_i = i;
+            }
+        }
+        min = max;
+        for (int i = 0; i < s; i++) {
+            if (n[i] < min) {
+                min = n[i];
+                min_i = i;
+            }
+        }
+        break;
+    }
+    cout << "\n";
+    cout << max << " #" << max_i + 1 << endl << min << " #" << min_i + 1 << "\n\n";
+
+    //Task 8
+    const int s = 100;
+    double n[s] = {};
+    int counter = 0;
+    while (true) {
+        srand(time(NULL));
+        for (int i = 0; i < s; i++) {
+            n[i] = round(rand() / (double)RAND_MAX * 10000) / 10;
+            if (n[i] - (int)n[i] == 0) {
+                counter++;
+            }
+        }
+        break;
+    }
+    cout << counter << "% of numbers don`t have a fractional part\n\n";
+
+    //Task 9
+    const int s = 200;
+    int n[s] = {}, o = 0, t = 0, th = 0;
+    while (true) {
+        srand(time(NULL));
+        for (int i = 0; i < s; i++) {
+            n[i] = random(0, 200);
+            if (n[i] / 10 == 0) {
+                o++;
+            }
+            else if (n[i] / 10 > 0 & n[i] / 10 < 10) {
+                t++;
+            }
+            else {
+                th++;
+            }
+        }
+        break;
+    }
+    cout << "Single-digit numbers: " << o / 2.0 << "%" << "\n";
+    cout << "Double-digit numbers: " << t / 2.0 << "%" << "\n";
+    cout << "Three-digit numbers: " << th / 2.0 << "%" << "\n";
+}