rand()/static_cast (RAND_MAX)*2 +3 3.0*(RAND_MAX-rand())/RAND_MAX + 2

QUESTION 4

A call to a C++ function is

The name of the function followed by a number of arguments not greater than the number of parameters in the definition

The name of the function followed by exactly the number of arguments as there are parameters in the definition

The name of the function followed by empty parentheses

The name of the function followed by any number of arguments, regardless of the number of parameters in the definition

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QUESTION 5

Which is incorrect? C++ predefined functions

are usually provided with the C++ compiler make C++ harder than necessary must use #include for the proper header file are usually provided in libraries

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QUESTION 6

Which of the following statements about the definition and declaration of functions is incorrect? (Note. Function definition includes the body of the function also called function block)

A function header is exactly the same as function prototype except for the semicolon A function definition is a function header followed by the function block Function declaration is exactly the same as function prototype Function definition is exactly the same as function prototype

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QUESTION 7

Here is a small program. Which of the statements about the variables is INcorrect?

 #include  const double NUM = 2.9345358; double num = 3; double numTimes(int x); int main( ) { 

 using namespace std; int value; 

cout << Enter a value, Ill multiply it by << NUM << endl;

cin >> value;

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 cout << You entered  << value <<  NUM times this is  << numTimes(value) << endl; 

return 0; }

 double numTimes(int x) { 

 double d; d = NUM * x; return d; 

}

the line doublenumTimes(int x); is a function definition

The variable x is a parameter in function numTimes the variable value is an argument in a call to numTimes The line return d; in the function numTimes is necessary

QUESTION 8

Assume this code fragment is embedded in an otherwise correct and complete program. What should be the output from this code segment?

 { for( int i = 0; i < 10; i++) { 

.. .

}

 cout << i << endl; } 

0 10 9 The variable i is undefined in this scope, so this should not compile

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QUESTION 9

A void function can have as many arguments as the programmer wishes

no arguments exactly one argument no more than 3 arguments

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QUESTION 10

A semicolon does not (usually) go after these with the exception of

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if (condition) int main() while (condition) a function header to make it a function declaration

QUESTION 11

Here is a small program. Which of the statements about the variables is correct?

 #include  const double NUM = 2.9345358; double num = 3; double numTimes(int x); int main( ) { 

 using namespace std; int value; 

cout << Enter a value, Ill multiply it by << NUM << endl;

 cin >> value; cout << You entered  << value 

 <<  NUM times this is  << numTimes(value) 

 << endl; return 0; 

 } double numTimes(int x) { 

 double d; d = NUM * x; return d; 

}

NUM is a global variable value is a local variable in the main function d is a local variable in the main function num is a global constant

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QUESTION 12

Given the function definition, which of the following are correct?

 int func(int n, double d) { 

 int j = n; double sum = 0; while( j >= 0) { 

sum += d; -j;

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QUESTION 13

1. Write a function that calculates the area, a, of a circle when its circumference c is given. The formula is:

2. Write a function that returns the radius, r, of the circle, given the circumference c. The formula is:

3. Write a C++ program that accepts the value of the circumference from the user, calculates the radius and area and displays the calculated values. Use the functions written in 1 and 2.

Hint. Do 2 first, then 1. Selected Answer: quiz 5.zip Remove

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