Question

Write a C++ function printArray(A, m, n) that prints an m × n two dimensional array A of integers, declared to be “int** A,” to the standard output. Each of the m rows should appear on a separate line.

Answer 1

Code:

#include <iostream>
#include <stdio.h>
using namespace std;

//Function printArra to print elements of array
void printArray(int** A,int m,int n)
{
   //Printing elements of the array
   cout<<"\nThe elements of the array are:"<<endl;
   for (int i = 0; i < m; i++)
   {
       for (int j = 0; j < n; j++)
       {
           cout<<A[i][j]<<" ";
       }
       cout<<endl;
   }
}

int main()
{   //Defining m and n
   int m = 5;
   int n = 6;
   //Declaring array with two dimensions
   //Here m is rows
   int** A = new int*[m];
   //Allocating columns of size n to dynamic array
   for (int i=0; i < m; i++)
       A[i] = new int[n];
      
   //Taking input of elements in array
   cout<<"Enter elements of the array:"<<endl;
   for (int i = 0; i < m; i++)
   {
       for (int j = 0; j < n; j++)
       {
           cin>>A[i][j];
       }
   }
  
   //Calling the function
   printArray(A,m,n);  
}

Code Photo:

1 #include <iostream> 2 #include <stdio.h> 3 using namespace std; 4 5 //Function printArra to print elements of array 6 void printArray(int** A, int m, int n) 7{ 8 //Printing elements of the array 9 cout<<"\nThe elements of the array are: "<<endl; 10 for (int i = 0; i <m; i++) 11 12 for (int j = 0; j <n; j++) 13 { 14 cout<<A[i][j]<<" "; 15 16 cout<<endl; 17 } { } 18 } 21 { 22 25 19 20 int main() //Defining m and n int m= 5; 23 int n = 6; 24 //Declaring array with two dimensions // Here m is rows 26 int** A = new int* [m]; 27 //Allocating columns of size n to dynamic array 28 for (int i=0; i<m; i++) 29 A[i] = new int[n]; 30 31 //Taking input of elements in array 32 cout<<"Enter elements of the array: "<<endl; for (int i = 0; i <m; i++) 34 35 for (int j = 0; j<n; j++) 36 37 cin>>A[i][j]; 38 } 39 33 { { } 40 41 //Calling the function printArray (A,m,n); 42 43 }


Output:

Enter elements of the array: 1 2 3 4 5 6 2 3 4 5 6 7 3 4 5 6 7 8 4 5 6 7 8 9 5 6 7 8 9 0 The elements of the array are: 1 2 3 4 5 6 2 3 4 5 6 7 3 4 5 6 7 8 4 5 6 7 8 9 5 6 7 8 9 0