C++ Chapter 2 T/F

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4.5

Suppose a = 5. After the statement ++a; executes, the value of a is still 5 because the value of the expression is not saved in another variable

False-- the value of a is 6 because the pre-increment operator incremented a to 6

The operands of the modulus operator must be integers.

True

25 / 3 =

8

3 - 5 % 7

-2

20 - 12 / 4 * 2 =

14

32 % 7

4

Suppose x=5. After the statement y = x++; executes, y is 5 and x is 6

True

An identifier can be any sequence of digits and letters.

FALSE - answer: an identifier consists of letters, digits, and the underscore character and must begin with a letter or underscore.

A C++ identifier can start with a digit.

FALSE - answer: must begin with a letter or underscore

In the statement cin>>y; y can only be an int or a double variable.

FALSE - can also be float, char, const, void, & return

In a mixed expression, all the operands are converted to floating-point numbers.

FALSE- answer: floating point and integer numbers

In C++, there is no difference between a reserved word and a predefined identifier.

False

If a=4; and b=3; then after the statement a=b; the value of b is still 3.

True

The following is a legal C++ program: TRUE int main() { return 0; }

True

In an output statement, the newline character may be a part of the string.

True