6.33 Read Following statements T/F ?
a) C automatically passes arrays to functions using pass by reference.
b) When C passes an array to a function, the called function normally can modify the
element values in the caller's original array.
c) The name of an array is actually the address of the...
5.9 If a = 7.0, b = 7.0 and c = 6.0, then what is printed by
printf( "%.2f", sqrt( a + b * c ) );
a) 49
b) 7.00
c) 7
d) 49.00
✓✓~~ANS: (b)
5.10 What is the value of fabs( -5.0 )?
a) 5
b) 5.0
c) -5
d) -5.0
✓✓~~ANS: (b) all math functions return double in C
5.13 Which is not a motivation for "functionalizing" a program?
,a) The divide-and-conquer approach makes program development more
manageable.
b) Software reusability—using existing building blocks to create new programs.
c) Avoid repeating code.
d) Execution performance—functionalized programs run faster.
✓✓~~ANS: (d)
5.15 The function prototype
double mySqrt( int x );
(a) defines a function called mySqrt which takes an integer as an argument and
returns a
double
(b) defines a function called double which calculates square roots
(c) defines a function called mySqrt which takes an argument of type x and returns a
double
(d) defines a function called mySqrt which takes a double as an argument and
returns an
integer
✓✓~~ANS: (a)
5.18 Which of the following functions does not contain any errors?
, (a) void printnum ( int x )
{
print( "%i", x );
return x;
}
(b) int cube( int s )
{
return ( s * s * s );
}
(c) double triple ( float n )
return ( 3 * n );
(d) double circumference ( int r );
return ( 3.14 * 2 * r );
✓✓~~ANS: (b)
5.19 int square( int ); is an example of a function __________.
a) datatype
b) stereotype
c) prototype
d) proceduretype
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