I am tying to get around how you will multiply the values in 2 arrays (as an input) to get an output. The problem I have is the how to increment the loops to achieve the task shown below

#include <iostream>

using namespace std;

main ()
 {
 int* filter1, *signal,fsize1=0,fsize2=0,i=0;

 cout<<" enter size of filter and signal"<<endl;
 cin>> fsize1 >> fsize2;

filter1= new int [fsize1];
signal= new int [fsize2];

cout<<" enter filter  values"<<endl;
for (i=0;i<fsize1;i++)
cin>>filter1[i];
 cout<<" enter  signal values"<<endl;
for (i=0;i<fsize2;i++)
cin>>signal[i];

/*
the two arrays should be  filled by users but use the arrays below for test

int array1[6]={2,4,6,7,8,9};
int array2[3]={1,2,3};

The output array should be

array3[9]={1*2,(1*4+2*2),(1*6+2*4+3*2),........,(1*9+2*8+3*7),(2*9+3*8),3*9}


*/


 return 0;
 }

This is part of a bigger task concerning filter of a sampled signal but it is this multiplication that i cant get done.