# Geeksforgeeks Solution For " Multiply Array "

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Problem :-

Calculate the product of all the elements in an array.

Input:
The first line of input contains an integer T denoting the number of test cases. Then T test cases follow. Each test case consist of two lines . The first line of each test case contains an integer N.The second line of each test case contains N space separated integers denoting elements of the array A[ ].

Output:

For each test case in a new line print the product of all elements.

Solution :-

#include <bits/stdc++.h>
using namespace std;
int main()
{
int t;
cin>>t;
while(t--)
{
long long int n,i,j,res=1;
cin>>n;
int arr[n];

for(i=0;i<n;i++)
cin>>arr[i];

for(i=0;i<n;i++)
res*=arr[i];

cout<<res<<endl;

}
return 0;

}

Output :-

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#### post written by: Ghanendra Yadav

Hi, I’m Ghanendra Yadav, SEO Expert, Professional Blogger, Programmer, and UI Developer. Get a Solution of More Than 500+ Programming Problems, and Practice All Programs in C, C++, and Java Languages. Get a Competitive Website Solution also Ie. Hackerrank Solutions and Geeksforgeeks Solutions. If You Are Interested to Learn a C Programming Language and You Don't Have Experience in Any Programming, You Should Start with a C Programming Language, Read: List of Format Specifiers in C.