Question

so I want to ask the user for a matrix size

int x = rows

int y = columns

for int x = 3 and int y = 3

I want to print

1 2 3

4 5 6

7 8 9

and for each dimension I would print number the start from 1 to the end

so for int x = 4 and int y = 2

I would print

1 2

3 4

and such.

Answer 1

// C++ program to input matrix size and print the elements in the matrix starting from 1

#include <iostream>

using namespace std;

int main()

{

       int rows, cols;

       // input of rows and columns of the matrix

       cout<<"Enter number of rows and columns of the matrix (separated by a space) : ";

       cin>>rows>>cols;

       int start = 1; // initialize the start element

       // loop over the number of rows

       for(int i=0;i<rows;i++)

       {

             // loop over the number of columns for each row

             for(int j=0;j<cols;j++)

             {

                    // print the start

                    cout<<start<<" ";

                    start++; // increment the start

             }

             cout<<endl; // add a new line after the columns of ith row are printed

       }

       return 0;

}

//end of program

Output: