C++ Program to Multiply Two Arrays

Write a C++ Program to Multiply Two Arrays with an example. In this C++ multiplication of two arrays example, we allow the user to enter the multiarr1, multiarr2 array sizes and array items. Next, we used the C++ for loop to iterate the multiarr1 and multiarr2 arrays from 0 to size.

Within the for loop, we performed multiplication on both the array items and assigned them to a new multiplication array. Here, we also used the cout statement (cout << multiarr1[i] << ” * ” << multiarr2[i] << ” = ” << multiplication[i] << “\n”;) to show you the result at each for loop iteration. Finally, we used one more for loop to print the multiplication array items.

#include<iostream>
using namespace std;

int main()
{
	int size, i, multiarr1[10], multiarr2[10], multiplication[10];
	
	cout << "\nPlease Enter the Array Size =  ";
	cin >> size;
	
	cout << "\nPlease Enter the First Array Items =  ";
	for(i = 0; i < size; i++)
	{
		cin >> multiarr1[i];
	}	
	cout << "\nPlease Enter the Second Array Items =  ";
	for(i = 0; i < size; i++)
	{
		cin >> multiarr2[i];
	}
	for(i = 0; i < size; i++)
	{
		multiplication[i] = multiarr1[i] * multiarr2[i];
		cout << multiarr1[i] << " * " << multiarr2[i] << " = " << multiplication[i] << "\n";
	}
	cout << "\nThe Final Result of Multiplying two Arrays = ";
	for(i = 0; i < size; i++)
	{
		cout << multiplication[i] << " ";
	}

 	return 0;
}

C++ Program to Multiply Two Arrays Example 2

In this C++ multiplication of two arrays example, we removed that extra for loop to display the items. Next, we placed a cout statement after performing the multiplication.

#include<iostream>
using namespace std;

int main()
{
	int size, i, multiarr1[10], multiarr2[10], multiplication[10];
	
	cout << "\nPlease Enter the Array Size =  ";
	cin >> size;
	
	cout << "\nPlease Enter the First Array Items =  ";
	for(i = 0; i < size; i++)
	{
		cin >> multiarr1[i];
	}	
	cout << "\nPlease Enter the Second Array Items =  ";
	for(i = 0; i < size; i++)
	{
		cin >> multiarr2[i];
	}
	cout << "\nThe Final Result of Multiplying two Arrays = ";
	for(i = 0; i < size; i++)
	{
		multiplication[i] = multiarr1[i] * multiarr2[i];
		cout << multiplication[i] << " ";
	}

 	return 0;
}

Please Enter the Array Size =  6

Please Enter the First Array Items =  10 20 30 40 50 60

Please Enter the Second Array Items =  4 5 6 7 8 9

The Final Result of Multiplying two Arrays = 40 100 180 280 400 540