Question

Given an array of integer, please complete a function multiply(). The function accepts the first memory address of an array and the size of an array as parameters and returns the multiplication of all the elements. In order to get a full score, the function must use a loop to iterate through each element of an array.

Pseudo code example:

  multiply([ 1, 2, 3], 3) → 6
  multiply([1, 1, 4 ,2], 4) → 8
  multiply([7, 0, 0, 7, 0, 7], 6 ) → 0

C program:

#include<stdio.h>

int multiply(int * arr, int array_size);

int main()

{

       int arr[] = { 1, 2, 3, 4, 5 }; // input example

       int result = multiply(arr, 5);

       printf("result %d ", result);

       return 0;

}

int multiply(int * arr, int array_size)

{

       // assuming that your code will be integrated into this part.

}

Answer 1

#include<stdio.h>

int multiply(int * arr, int array_size);

int main() {

  int arr[] = { 1, 2, 3, 4, 5 }; // input example

  int result = multiply(arr, 5);

  printf("result %d ", result);

  return 0;

}


int multiply(int * arr, int array_size) {

  int i;

  // initialize the product variable to 1
  int array_product = 1;

  // looping through the array
  for(i = 0; i < array_size; i++) {
    
    // calculating the product
    array_product = array_product * arr[i];

  }

  // return product of array
  return array_product;

}

For help please comment.

Thank You