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Object Oriented Programming MCQ - Functions

1 Choose the correct statements regarding inline functions.

Each occurrence of the iriline function call will be replaced by its body. No function call overhead will be there but the size of the code will increase.

2 If many functions-have the same name, which of the following information, if present, will be used by the compiler to invoke the correct function to be used?

3 A function abc is defined as
void abc(int x=0, int y, int z=0)
{

cout << x << y << z;
}
Which of the following function calls is/are illegal? (Assume h, g are declared as integers)

Since the second argument is mandatory, any call should have at least the first two parameters. Some compilers expect the optional parameters to follow the others. Such compilers give a compilation error.

4 The compiler identifies a virtual function to be pure

5 int a =1 , b=2;

a=chg(b) ;

cout << a << b ;

If the function chg is coded as

int chg(int x)
{
x = 10;

return ();

Here the default parameter passing mechanism of pass by value will be used. Any change done to the parameter will not be reflected outside the function. So, b retains its value 2.

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Question:

int a =1 , b=2;a=chg(b) ;cout << a << b ;If the function chg is coded asint chg(int x){x = 10;return ();}then

A. it results in compile-time error
B. it results in run time error
C. it prints 112
D. it prints 111

Correct answer: C

Explanation:

Here the default parameter passing mechanism of pass by value will be used. Any change done to the parameter will not be reflected outside the function. So, b…

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