Explain what line 20 is doing Explain what line 22-24 is doing
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
Related questions
Question
Explain what line 20 is doing
Explain what line 22-24 is doing
![#include <iostream>
2
using namespace std;
//Function to display the array
E void display (int** a, int r, int c) {
for (int i = 0; i < r; i++) {
for (int j = 0; j < c; j++) {
cout <« a[i][j] « ' ';
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}
cout << endl;
}
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A} int main()
{
int** array;
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int row, col, i, j;
cout <« "Enter the number of rows" « endl;
cin >> row;
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cout <« "Enter the number of columns" <« endl;
cin >> col;
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18
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//Dynamically allocating row space in heap
array = new int* [row];
//Dynamically allocating column space in heap
for (i = 0; i < row; i++) {
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array[i] = new int[col];
}
//Taking input in the array
cout <« "Enter " << (row * col) <«
for (i = 0; i < row; i++) {
for (j = 0; j < col; j++) {
cout << "Enter element at " << i + 1 << " row
cin >> array [i][j];
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numbers \n";
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<«j + 1 <« " column" << endl;
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}//Displaying array
cout <« "Matrix is: \n";
display(array, row, col);
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//Free space after the use of array
delete[] array;
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| }
38](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F35cabfee-9116-4257-bdac-4e17d3de935c%2F593f12ea-c357-4958-bb03-920677d96e7c%2F9wlr50a_processed.png&w=3840&q=75)
Transcribed Image Text:#include <iostream>
2
using namespace std;
//Function to display the array
E void display (int** a, int r, int c) {
for (int i = 0; i < r; i++) {
for (int j = 0; j < c; j++) {
cout <« a[i][j] « ' ';
3
4
5
}
cout << endl;
}
8
9
10
11
A} int main()
{
int** array;
12
13
14
int row, col, i, j;
cout <« "Enter the number of rows" « endl;
cin >> row;
15
16
cout <« "Enter the number of columns" <« endl;
cin >> col;
17
18
19
//Dynamically allocating row space in heap
array = new int* [row];
//Dynamically allocating column space in heap
for (i = 0; i < row; i++) {
20
21
22
array[i] = new int[col];
}
//Taking input in the array
cout <« "Enter " << (row * col) <«
for (i = 0; i < row; i++) {
for (j = 0; j < col; j++) {
cout << "Enter element at " << i + 1 << " row
cin >> array [i][j];
23
24
25
26
numbers \n";
27
28
29
<«j + 1 <« " column" << endl;
30
31
32
}//Displaying array
cout <« "Matrix is: \n";
display(array, row, col);
33
34
35
//Free space after the use of array
delete[] array;
36
37
| }
38
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