306-135� Introduction to Programming

Quiz 6 - 10/21/99

Name:� ����������������������������������������������������������������������

1. [2] If a function contains a locally declared variable with the same name as a global variable, no confusion results because references to variables in functions are first interpreted as references to local variables.

a)� True���������������������� b) False

2. [2] Variables declared at the beginning of a block are accessible to all statements in that block, including those in nested blocks (assuming the nested blocks don't declare local variables with the same names).

a)� True���������������������� b) False

3. [6] The statement:������������������ power(k, l, m);

is a call the function whose definition can be found below.� Rewrite the function as a value-��

returning function, then write a function call that assigns the function value to the variable m.

void power (float base, ��� ���// IN:� the base to be raised to a power

������������ int exponent,� �� // IN:� the power that the base will be raise to�

������������ float& answer) // OUT: the result from raising the base to power of the exponent

���� {

int i;

answer = 1.0;

i = 1;

while (i <= exponent)

{

����������� answer = answer * base;

����������� i++;

}

}

Answer:���

float power (float base,� ����������//IN: :� the base to be raised to a power

������������ ���������� ���int exponent)������ // IN:� the power that the base will be raise to�

{

����������� float answer = 1.0;

i = 1;

while (i <= exponent)

{

����������� answer = answer * base;

����������� i++;

}

return answer;

}

Function call:� ����������� m = power (k,l)����������������������������������������������������������������������������������