C Programming Chapter 3: Operators and Expressions Quiz

16 Questions

What values represent true and false in C logical expressions?

0 and 1, respectively

Regarding the associativity of logical operators in C, what is the associativity?

Left to right

Which group of operators in C has precedence lower than arithmetic and unary operators?

Relational operators

What is the purpose of equality operators in C logical expressions?

To compare two values for equality or inequality

If j = 2 and k = 3, what will be the result of the expression 'j < k'?

True

For the logical expression 'i != j', what does '!=' represent in C?

Not equal to

Which logical operator in C is represented by '&&'?

Logical and

When do logical 'or' operations return false in C?

When both operands are false

What is the outcome of a logical 'and' operation in C when one operand is false?

Always false

What happens in C if the operands of a logical 'or' operation are both true?

It returns true

Which symbol is used for the logical 'or' operation in C?

If both operands of a logical 'and' operation in C are true, what is the result?

True

What is assigned to 'flag' if the value of 'i' is positive?

100

In the assignment statement 'min = (f < g) ? f : g', what does 'min' store when 'f' and 'g' are equal?

Which operator category has precedence just above the assignment operators?

Logical and logical or

'Logical and logical or' operators fall under which category of operators based on precedence?

Relational operators

Study Notes

Expressions in C

Expressions can consist of entities, operators, and combinations of both.
They can also represent logical conditions that are either true or false.
In C, true and false are represented by integer values 1 and 0, respectively.

Relational Operators

Relational operators compare values and return true (1) or false (0).
Examples of relational operators include >, >=, <, <=, ==, !=.
These operators have a lower precedence than arithmetic and unary operators.
They have a left-to-right associativity.

Equality Operators

Equality operators check if values are equal or not equal.
Examples of equality operators include == and !=.
These operators have a separate precedence group, beneath the relational operators.
They have a left-to-right associativity.

Logical Operators

Logical operators combine logical expressions into more complex conditions.
Examples of logical operators include && (logical and) and || (logical or).
The result of a logical and operation is true only if both operands are true.
The result of a logical or operation is true if either operand is true or both operands are true.

Conditional Expressions

Conditional expressions can appear on the right-hand side of a simple assignment statement.
The resulting value of the conditional expression is assigned to the identifier on the left.
Examples of conditional expressions include (i < 0) ? 0 : 100 and (f < g) ? f : g.

Operator Precedence

Operator precedence determines the order in which operators are evaluated.
Table 3-1 summarizes the precedences for all operators discussed in this chapter.
The conditional operator has its own precedence, just above the assignment operators.
The associativity of the conditional operator is right to left.

Test your knowledge of C programming operators and expressions with this quiz. Explore various relational and equality operations, including type conversion rules. See examples to better understand how different operands are converted to perform operations.

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