How to write a program that multiplies 2 arrays in C

Question

a program that multiplies two arrays, and are multiplied on an element-by-elemnt basis... so like [4,2,7]*[3,5,8]=[12,10,56].
All i know is that it needs to have

void multiply(int arr1[], int n, int arr2[], int arr3[];

Example:
Enter the length of the array: 5
Enter the elements of the first array: 3 4 7 14 9
Enter the elements of the 2nd array: 12 8 2 5 3
Output: 36 32 14 70 27

Answer 1

int sizeOfArr = 5;
int arr1[sizeOfArr] = {1, 2, 3, 4, 5}, arr2[sizeOfArr] = {6, 7, 8, 9, 10}, mulArr[sizeOfArr] = {0};

for (int i = 0; i < sizeOfArr; i++)
mulArr[i] = arr1[i] * arr2[i];

Print it yourself

Answer 2

Jestboy ask for input which is length of array using scanf and store the same in variable n for example...

declare three array pointer referring to n size array one for output and two for input.. for example, int* arrOutput = new int[n]

loop through n numbers and store them in array twice

loop through n number in a loop and multiply elements of same index from both array to output array