some help

Author: arduinka55055

lab4.cpp

@@ -169,6 +169,6 @@ int main(){
     std::cout<<std::endl<<"Запускаємо тести"<<std::endl;
     test();
 
-    delete arr;//вивільнення пам'яті
+    delete[] arr;//вивільнення пам'яті
     return 0;
 }

lab5var14.cpp

@@ -0,0 +1,87 @@
+// ConsoleApplication2.cpp : This file contains the 'main' function. Program execution begins and ends there.
+//
+
+#include <iostream>
+#include <windows.h>
+#include <iomanip>
+using namespace std;
+
+int main()
+{
+    SetConsoleOutputCP(CP_UTF8);
+    int a;
+    int b;
+    int c;
+    int sum = 0;
+    const int ROW = 9;
+    const int COL = 9;
+    int Arr[ROW][COL];
+    cout << "Введіть число a" << endl;
+    cin >> a;
+    cout << "Введіть число b" << endl;
+    cin >> b;
+
+
+    for (int i = 0; i < ROW; i++) {
+        for (int j = 0; j < COL; j++) {
+            Arr[i][j] = a + rand() % (b - a + 1);
+            cout << setw(5)<< Arr[i][j] << " ";
+        }
+        cout << endl;
+    }
+    //
+    /*
+    1 2 3 4
+    5 6 7 8.
+    9 8 7 6.
+    1 6 4 6.
+    
+    */
+    for(int n=0; n<ROW; n++){
+        int sum = 0;
+        for(int j=COL-1; j>(ROW-n-1); j--){
+            sum += Arr[j][n];
+        }   
+
+        Arr[ROW-1-n][n] = sum;
+    }
+    cout << endl << "друга хрень:" << endl;
+
+    for (int i = 0; i < ROW; i++) {
+        for (int j = 0; j < COL; j++) {
+            cout << setw(5) << Arr[i][j] << " ";
+        }
+        cout << endl;
+    }
+
+    cout<<"Третя хрень:"<<endl;
+    for(int n=0; n<ROW; n++){
+        if(n%2==1){
+            cout<<setw(5)<<0<<sum;
+            continue;
+        }
+
+        int sum = 0;
+        for(int j=COL-1; j>=0; j--){
+            sum += Arr[j][n];
+        }   
+
+        cout<<setw(5)<<sum;
+    }
+
+
+    cout << endl << "кінець" << endl;
+    system("pause");
+    return 0;
+}
+
+// Run program: Ctrl + F5 or Debug > Start Without Debugging menu
+// Debug program: F5 or Debug > Start Debugging menu
+
+// Tips for Getting Started: 
+//   1. Use the Solution Explorer window to add/manage files
+//   2. Use the Team Explorer window to connect to source control
+//   3. Use the Output window to see build output and other messages
+//   4. Use the Error List window to view errors
+//   5. Go to Project > Add New Item to create new code files, or Project > Add Existing Item to add existing code files to the project
+//   6. In the future, to open this project again, go to File > Open > Project and select the .sln file