Hi,
Please refer screenshots for more clarity..
I've used double pointer and setw for setting width for printing in this code.. Please go through it..
C++ code:
//program starts here..
#include <iostream>
#include<stdlib.h>
#include<iomanip>
using namespace std;
int main() {
int row,col;
while(1)//while for validation
{
cout << "please enter the rows in the range of [1 to
10]:";
cin >> row;
if(row >= 1 && row <= 10)
break;
else
cout << "input not within the range[1 to 10]. Please Try
again.." << endl;
}
while(1)//column validation
{
cout << "please enter the rows in the range of [1 to
10]:";
cin >> col;
if(col >= 1 && col <= 10)
break;
else
cout << "input not within the range[1 to 10]. Please Try
again.." << endl;
}
int **arr = (int **)malloc(row * sizeof(int
*));//allocating memory with row's size
//for each row one pointer
for(int i =0 ; i < row ; i++)
{
arr[i] = (int *)malloc(col * sizeof(int));//pointer to ith
row ..
}
for(int i = 1 ; i <= row ; i++)
{
for(int j = 1; j <= col ; j++)
{
arr[i-1][j-1] = i*j;//multiplication and storing in 2D
array
}
}
for(int i = 1; i <= col; i++)
{
cout << setw(3)<< " |" << i ;//setting
width for each value and printing it
}
cout << endl;
for(int x = 1; x < col; x++)
{
cout << "-----*";
}
cout << endl;
for(int i = 0 ; i < row ; i++)
{
cout <<left <<setw(3) << i+1 ;//each row
value
for(int j = 0; j < col ;j++)
{
cout <<"|" << setw(3)<< arr[i][j] ;
//multiplication value
}
cout << endl;
for(int x = 1; x < col; x++)
{
cout << "-----*";//after each row,
separator
}
cout << endl;
}
}
//End of the program
If you have any doubts, please feel free to comment below..
Thank you..
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