Functions and Subroutines - General Questions

What will be the output of the C#.NET code snippet given below?

namespace IndiabixConsoleApplication
{
class SampleProgram
{
static void Main(string[ ] args)
{
int i = 5;
int j;
fun1(ref i);
fun2(out j);
Console.WriteLine(i + ", " + j);
}
static void funl(ref int x)
{
x = x * x;
}
static void fun2(out int x)
{
x = 6;
x = x * x;
}
}
}

Which of the following statements are correct about the C#.NET program given below?

namespace IndiabixConsoleApplication
{
class SampleProgram
{
static void Main(string[ ] args)
{
int a = 5;
int s = 0, c = 0;
s, c = fun(a);
Console.WriteLine(s +" " + c) ;
}
static int fun(int x)
{
int ss, cc;
ss = x * x; cc = x * x * x;
return ss, cc;
}
}
}

1 An error will be reported in the statement s, c = fun(a); since multiple values returned from a function cannot be collected in this manner.

2 It will output 25 125.

3 It will output 25 0.

4 It will output 0 125.

5 An error will be reported in the statement return ss, cc; since a function cannot return multiple values.

A function can be used in an expression, whereas a subroutine cannot be.

Which of the following statements are correct about subroutines used in C#.NET?

1 If we do not return a value from a subroutine then a value -1 gets returned.

2 Subroutine definitions cannot be nested.

3 Subroutine can be called recursively.

4 To return the control from middle of a subroutine exit subroutine should be used.

5 Subroutine calls can be nested.

If a function fun() is to sometimes receive an int and sometimes a double then which of the following is the correct way of defining this function?

What will be the output of the C#.NET code snippet given below?

namespace IndiabixConsoleApplication
{
class SampleProgram
{
static void Main(string[ ] args)
{
int i;
int res = fun(out i);
Console.WriteLine(res);
}
static int fun (out int i)
{
int s = 1;
i = 7;
for(int j = 1; j <= i; j++)
{
s = s * j;
}
return s;
}
}
}

Which of the following CANNOT occur multiple number of times in a program?

How many values is a subroutine capable of returning?