Topic 5 - Selection Statements

Question 1

Besides return statements and expression statements, what are the other types of statements?

Answer 1

1) selection statements
2) iteration statements
3) jump statements

Question 2

What is the precedence of relational operators relative to arithmetic operators?

Answer 2

Lower.

Question 3

What is the relational operators and equality operators association?

Answer 3

Left-associative.

Question 4

What is the precedence of equality operators relative to relational operators?

Answer 4

Lower.

Question 5

The logical operators treat any nonzero operand as ___

and any zero operand as ____?

Answer 5

True

False.

Question 6

What is conditional expression syntax?

Answer 6

expre1 ? expr2 : exp3 which means:

if expr, then e ,xpr2, else expr3

Question 7

Does C89 have a proper boolean type?

Answer 7

No, had to declare an int variable and assign it either 0 or 1

Question 8

What is the boolean type in C99?

Answer 8

_Bool type
_Bool flag;
It is an integer type that can only take values 0 and 1

Question 9

What happens when you attempt to store a non-zero value into a _Bool variable?

Answer 9

Causes the variable to be assigned 1

Question 10

What does C99 header do?

Answer 10

Defines a macro, bool, that stands for _Bool:
bool flag; same as:
_Bool flag;

Question 11

The switch statement must be followed by a:

Answer 11

an integer, no floating point numbers or strings.

Question 12

What happens when the default case is missing and the controlling expression’s value doesn’t match any case label?

Answer 12

the control passes to the next statement after the switch.

Question 13

What happens when “Break” isn’t included in a case label body?

Answer 13

Control flows to next case label.