Question

In this question, you must create a function in C++ using an external editor. When satisfied with your work, you shall attach it here for full credit. All your source code must be in one cpp file. Write a function that accepts two parameters, the first shall be an array of integers, and the second shall be the length of the input array. The function you create shall process the input array and calculate if multiplying any two numbers within produces a result also contained in the array. If the product of two number equals a third contained in the array, the function shall return true (1). Otherwise, the function shall return 0. For example, array: [0,1,3,5,15], the function shall return True, for 3x5=15. array: [0,1,3,3,7], the function shall return True, for 1x3=3. (duplicates are possible) array: [2,-4,-3,10,8], the function shall return False array: [6,4,-3,-2,0,5], the function shall return True, for -3x-2=6 Do not assume well-formed input, so you must include some basic error checking. You may use the header files contained in the standard library and are encouraged to use data structures (like a map or set) to complete the problem efficiently

Answer 1

See explaination

Step-by-step explanation:

#include<iostream>

#include<map>

using namespace std;

bool contains(int arr[], int size){

map<int,int> nums;

for(int i=0; i< size; i++) nums[arr[i]]=1;

int product;

for(int i=0; i<size-1; i++){

for(int j=i+1;j<size;j++){

product = arr[i]*arr[j];

if (nums[product]==1) return true;

}

}

return false;

}

int main(){

int arr[] ={6,4,-3,-2,0,5};

cout<<boolalpha <<contains(arr,5)<<endl;

return 0;

}