What will be the output of the following C++ program? 
#include <stdio.h> 
 #include<iostream> 
 using namespace std; 
 int array1[] = {1200, 200, 2300, 1230, 1543}; 
 int array2[] = {12, 14, 16, 18, 20}; 
 int temp, result = 0; 
 int main() 
 { 
 for (temp = 0; temp < 5; temp++)  
 { 
 result += array1[temp]; 
 } 
 for (temp = 0; temp < 4; temp++) 
 { 
 result += array2[temp]; 
 } 
 cout << result; 
 return 0; 
 }

int myFunction(int x, int y = 10) {
  return x + y;
}

int main() {
  int a = 5;
  int b = myFunction(a, 20);
  cout << b << endl;
  return 0;
}

What is the output of the following code?
void myFunction(int x, int y) {
  x = x + y;
}

int main() {
  int a = 5;
  int b = 10;
  myFunction(a, b);
  cout << a << endl;
  return 0;
}