//choices.cpp
#include<iostream> //for cin and cout
using namespace std;

int main()
  {
  //Simple if [then] else
  //There is no "then" but there
  //is a then clause.
  int grade;
  cout << "Enter numerical grade:\n";
  cin >> grade;
  if (grade>=60)
      cout << "PASS\n";
  else
      cout << "FAIL\n";

  //Can have an if without an else
  char response;
  cout << "Did you pass go?\n";
  cin >> response;
  if (response=='y' || response=='Y')
      cout << "Collect $200.\n";

  //can combine
  float displacement,start,finish;
  cout << "Enter initial and final locations:\n";
  cin >> start >> finish;
  displacement=finish-start;
  if (displacement>0)
      cout << "Moved forward.\n";
  else if (displacement<0)
      cout << "Moved backward.\n";
  else
      cout << "Back where you started.\n";

  //switch can only make 
  //choices based on integer values.
  int action;
  cout << "What would you like to do?\n"
      << "1: Withdraw from checking\n"
      << "2: Withdraw from saving\n"
      << "3: Deposit to checking\n"
      << "4: Deposit to saving\n";
  cin >> action;
  switch (action) {
      case 1:
          cout << "Here is your money from checking.\n";
          break;
      case 2:
          cout << "Here is your money from savings.\n";
          break;
      case 3:
      case 4:
          cout << "Give me your money.\n";
          break;
      default:
          cout << "Not a valid choice!\n";
      } //end switch

  //notice chars are ints
  char letter;
  cout << "Enter your letter grade:\n";
  cin >> letter;
  switch (letter) {
      case 'a':
      case 'A':
          cout << "Great job! ";//no break, falls through
      case 'b':
      case 'B':
      case 'c':
      case 'C':
      case 'd':
      case 'D':
          cout << "You passed the course.\n";
          break;
      case 'f':
      case 'F':
          cout << "You failed.  Try it again.\n";
          break;  //I don't need this break, but it
                      //is safer, in case I add more cases.
      }  //end switch
  return 0;
  }