/* hw5p1a.c */

#include <stdio.h>
#include "simpio.h"

# define MAXSIZE 100

int DotProduct (int A[], int B[], int n);

void main()
{
  int n, i;
  int A[MAXSIZE], B[MAXSIZE];
  printf("enter an integer n: ");
  n = GetInteger();
  /* get input arrays */
  for (i = 0; i < n; i++) {
    printf("enter A[%d] of vector A: ", i);
    A[i] = GetInteger();
  }
  for (i = 0; i < n; i++) {
    printf("enter B[%d] of vector B: ", i);
    B[i] = GetInteger();
  }
  printf("the dot product is %d\n", DotProduct(A, B, n));
}

int DotProduct (int A[], int B[], int n)
{
  int i, tmp = 0;
  for (i = 0; i < n; i++)
    tmp += A[i] * B[i];
  return tmp;
}