Question

T F a) Void Functions can use reference parameters. T F b) Arguments corresponding to reference parameters can be variables only T F c) The C++ statement retum "hello can be used with an integer value-retuming function T F d) Static variables maintain their value from function call to function call. T F e) The components of a C++ array must be homogeneous T F fA hierarchical structure has at least one component that is itself a structure. T F T F h) If a function has a value parameter the corresponding argument may be a T F i Input file stream parameters are always reference parameters and output file stream g)All members of a union can hold a valid value at the same time variable, a constant, or an arbitrary expression. parameters are always value parameters. T F j With respect to a given block, an identifier is called a local variable if it has been declared outside of that block T F k) The names of members in a structure must be unique for that structure declaration T F ) The expression name.first could be used to access the name member of the structure variable first. T F m) The lifetime of a local variable is for the duration of the program T F n)Giobal identifiers have name precedence over local identifiers with the same name. T F o)A static vaniable is one in which memory is allocated when control enters the block in which it is declared and deallocated when control exits the block in which it is declared? T F p)C+ checks for out-of-bounds array indexes at compile time T F q)Using an array index that is out of bounds resuits in a compile error. T F r)The reserved word const before an array parameter allows a function to change values of the array

Answer 1

a) void functions can use reference parameters

TRUE

The example can be given as,

void assign(int& a, int b) {
   a = b;  
}

b) Arguments corresponding to reference parameters can be variables only

TRUE

Because reference parameters cannot accept expressions or constants in function call , only variables are accepted

c) The c++ statement return "hello" can be used with integer value returning function

FALSE

The use of return "hello" statement within integer value returning function will give an error as,

invalid conversion from 'const char*' to 'int'

d) Static variables maintain their value from function call to function call

TRUE
Static variables are initialized only once in a program and they maintain their value through different function calls within the program.

The example of declaration of static variable is

static int count = 0;