1. Midterm Review

2. First Midterm Exam Friday, Oct 6th Closed book
But.. you may bring a cheat sheet!
One side of an A4-sized paper
Partial access to computers

3. Part II (paper or computer based)
Part I (paper based)
Multiple choices
Write the output of a program
Part II (paper or computer based)
Programming
Visual Studio only
You shouldn’t use the network

4. Variables a place to hold a number or data of other types
Variable names
Start with a letter or the underscore
Remaining can be letters, numbers or underscore
x x1 3X _abc %change data-1 PROG.CPP Big_Bonus
C++ is case-sensitive
rate RATE Rate

5. The output function cout
c(C++ language)out(output)
c(C++ language)in(input)
cout<<whatever data you want to output;
cout<<“Welcome to CMPT102!”;
<< represents the flow of the data.

6. Input Function cin cout: output to screen cin: input from keyboard
cout<<whatever you want to output;
cin>>variable_name;
cin>>variable1>>variable2;
Or cin>>variable1;
cin>>variable2;

7. http://software. intel

8. The char Type Short for character
Any single character from the keyboard
a letter, a digit, or punctuation mark
int number; char letter;
int number = 5; char letter = ‘a’;
char letter = ‘A’;

9. The Class string #include <string> Concatenation
char letter; string message;
char letter = ‘a’; string message = “hello”;
Concatenation
string firstName = “Chuck”;
string lastName = “Norris”;
string name = firstName + lastName;
//string name = firstName + “ “ + lastName;

10. getline() To read the whole line of input into a string string name;
getline(cin, name);

11. The bool Type Boolean Two values bool flag; bool isPrime = false; True

12. Arithmetic Operators +, -, *, / int / int -> int
double / int -> double
10/3, 5/2, 11/3

13. Modulus %
17 % 5 = 2
23 % 2 = ?
20 % 3 = ?
How to determine if a number is even/odd?

14. Syntax for if-else if (condition) Yes_Statement else No_Statement
Chooses between two alternative actions

15. The And Operator If score is greater than 0 and less than 100...
(score > 0) && (score < 100)
is true only if both are true

16. The Or Operator (score1 >= 60) || (score2 >= 60)
is true if one or both are true

17. The Not Operator
!(score > 60)
is equivalent to
score <= 60

18. Nested Statements

19. Multiway if-else syntax
if (condition_1)
Action_1;
else if (condition_2)
Action_2;
...
else if (condition_N)
Action_N;
else
Action_For_All_Other_Cases;

20. The Conditional Operator
Can use to create short if/else statements
Format: expr ? expr : expr;
x<0 ? y=10 : z=20;
First Expression:
Expression to be
tested
2nd Expression:
Executes if first
expression is true
3rd Expression:
Executes if the first
expression is false

21. Type Casting static_cast<Type>(Value) double -> int
static_cast<int>(9.2)
static_cast<int>(number)

22. switch Statement Syntax
switch (Controlling_Expression) {
case result_1:
Statement_Sequence_1;
break;
case result_2:
...
case result_n:
Statement_Sequence_n;
default:
Default_Statement_Sequence; }

23. Syntax of the while Statement
while (Boolean_Expression) {
Statement_1; // body
Statement_2; // iteration
... }
Statement;

24. The do-while Statement{
Statement_1;
Statement_2;
...
} while (Boolean_Expression);
Statement;
while (Boolean_Expression);

25. Announcements Homework 3 is out No class on Tuesday, Oct 10
Due on Friday, Oct 13
No class on Tuesday, Oct 10
Follows a Monday schedule