Week 7 (making decisions 3)

Question 1

What is the scope of variables?

Answer 1

Live and die by the block

Question 2

When can you use variables with the same name?

Answer 2

When they are in nested blocks

Question 3

How can you compare chars?

Answer 3

with the greater than and less than operators, as well as the ==

Question 4

How do you compare string objects?

Answer 4

with < , > , == (compares char for char and if they are all equal then the whole thing is equal.

Question 5

what is the conditional operator? (syntax)

Answer 5

first expression to be tested ? executes if true : executes if false;

Question 6

syntax for switch statement

Answer 6

switch (IntegerExpression)
case ConstantExpression:
statement;
break;

Question 7

what is an enumerated data type?

Answer 7

set of named integer constants

Question 8

Are enums string literals?

Answer 8

No, they are named constants.

Question 9

Can you set enums = 1;

Answer 9

no

Question 10

how to check if files exsist

Answer 10

if (!inputfile)

if(inputFile.fail)