3. [Programming] [40 points] Given two arrays a and b with the same size, write

Question

3. [Programming] [40 points] Given two arrays a and b with the same size, write two (1) The 1 " function computes the dot product of the two arrays, le, the dot product (2) The 2" function computes the element-wise product of the two arrays. That is, the functions: result is an array with the same size as a or b. its elements are given by Hint: the function has prototype vold elementwise productfoat oll, float bl. float cl, size, t sire In the main function, compute the dot product and the element-wise product of the following two arrays float alSizEl-12.01, 4.0f, 1.0f,3.of, 5.or float bSzi|s { 40, 2.0f, 8 ot,-7.0t, 1.0 MacBook Air 0 F7

Explanation / Answer

// this code is in cpp

#include<bits/stdc++.h>

using namespace std;

float dot_product(float a[],float b[],size_t size)

{

float ans=0.0f;

for(int i=0;i<size;i++)

{

ans+=(a[i]*b[i]);

}

return ans;

}

void elementwise_product(float a[],float b[],float c[],size_t size)

{

for(int i=0;i<size;i++)

{

c[i]=(a[i]*b[i]);

}

}

int main()

{

size_t size=5;

float a[size]={2.0f,4.0f,1.0f,3.0f,5.0f};

float b[size]={-4.0f,2.0f,8.0f,-7.0f,1.0f};

float c[size];

//here compute dot product and print

printf( "%lf ", dot_product(a,b,size));

//here compute elementwise product and print

elementwise_product(a,b,c,size);

for(int i=0;i<size;i++)

{

printf( "%lf ", c[i]);

}

cout<<endl;

return 0;

}

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