Sample array usage in C++

array_sample_usage.cpp

// Dependencies:
#include <iostream.h>
#include <conio.h>
#include <stdlib.h>

int main(){
  // Init program
  clrscr();
  
  // Vars:
  int lengthOfArrays = 0;
  int arrayA[1000];
  int arrayB[1000];
  // --Initialize arrays state
  for( int i = 0; i < 1000; i++){
    arrayA[i] = 0;
    arrayB[i] = 0;
  }
  
  // Print out program's description:
  cout << endl << "***************************";
  cout << endl << "";
  cout << endl << "";
  cout << endl << "";
  cout << endl << "***************************";
  
  // Initialize program's state using user input from stdin.
  cout << endl << "Please enter length of array to randomize." << endl << "Arrays length: ";
  cin >> lengthOfArrays;
  
  if( lengthOfArrays > 1000){
    cout << endl << "Array's length can not be more than 1000";
    cout << endl << "Press any key to exit.";
    getch();
    return 1;
  }
  
  // Begin processing:
  //  --randomize each array
  for( int i = 0; i < lengthOfArrays; i++){
    arrayA[i] = rand();
    arrayB[i] = rand();
    cout << endl << "A[" << i <<"] = " << arrayA[i];
    cout << endl << "B[" << i <<"] = " << arrayB[i];
  }
  // --sum all of ints in each array
  int sumA = 0;
  int sumB = 0;
  for( int i = 0; i < lengthOfArrays; i++){
    sumA += arrayA[i];
    sumB += arrayB[i];
  }
  
  cout << endl << "Sum of A is: " << sumA;
  cout << endl << "And sum of B is: " << sumB;
  
  // Print exit message
  cout << endl << "";
  cout << endl << "Thank you!";
  cout << endl << "Press any key to exit.";
  
  // Exit cleanly.
  getch();
  return 0;
}