Question & Answer: #include // Use setw() for proper column output. I used 3……

Hi, I’m trying to build the table below.

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Question & Answer: #include // Use setw() for proper column output. I used 3……
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0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

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Can you fill in the code to build the table? Here is the file below.

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// app.cpp

#include <iostream>

#include <iomanip> // Use setw() for proper column output. I used 3.

using namespace std;

const int ROWS = 10;

const int COLS = 15;

int main()

{

int ** table; // This is a pointer to a pointer. Use it to create

// a two-dimensional array.

// Write code here to allocate memory for the table

// Step 1: Allocate an array of pointers that has ROWS elements.

// Step 2: Allocate each row to have COLS elements.

// Write code here to populate it with required integers

// as per the lab assignment document.

// Write code here to print the table.

// Write code here to deallocate memory for the table.

// You allocated each row, so now you have to deallocate each row.

// Then deallocate the table pointer itself.

// Run this program in valgrind to make sure there are no leaks.

// Valgrind command: valgrind –leak-check=full ./lab5app

return 0;

}

Expert Answer

 

#include<iostream>

#include<iomanip>

using namespace std;

const int ROWS=10;

const int COLS=15;

int main()

{

//**table is pointer to a pointer, and creadted

//a 2-dim array

//Allocated memory for ROWS

int **table=new int*[ROWS];

//Allocating memory for COLS

for(int i=0;i<ROWS;i++)

table[i]=new int[COLS];

//populating given pattern

for(int i=0;i<ROWS;i++)

{

int temp=i;

for(int j=0;j<COLS;j++)

{

table[i][j]=temp;

temp++;

}

}

//printing populated pattern

for(int i=0;i<ROWS;i++)

{

for(int j=0;j<COLS;j++)

{

cout<<setw(4)<<table[i][j];

}

cout<<“n”;

}

//deallocating memory for the table

for(int i=0;i<ROWS;i++)

{

delete[] table[i];

}

delete[] table;

return 0;

}

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