CBSE Guess > Papers > Important Questions > Class XII > 2010 > Computer Science > Computer Science By MRK

CBSE CLASS XII

2009 Outside Delhi:

1.a. What is the difference between Actual Parameter and Formal Parameter? Give an example in C++ to illustrate both types of parameters.

Ans. The parameters in the function call statement (or calling function) are called as Actual Parameters.
The parameters in the function definition (or called function) are called as Formal Parameters.

Eg:
void manip(int x, int y)
{ ---
---
}
void main( )
{
int a,b;
----
Manip(a,b);
}
Here a,b are Actual Parameters and
x,y are Formal Parameters.

1.b. Write the names of the header files to which the following belong:(i) setw( ) (ii)sqrt( )

Ans. (i) setw( ) – iomanip.h
(ii)sqrt( ) - math.h

1.c. Rewrite the following program after removing the syntactical errors (if any). Underline each correction.

include <iostream.h>
include <stdio.h>
class MyStudent
{ int StudentId=1001;
char Name[20];
public
MyStudent( ) { }
void Register( )
{ cin>>StudentId;
gets(Name);
}
void Display( )
{ cout<<StudentId<<”:”<<Name<<endl;
}
};
void main( )
{
MyStudent MS;
Register.MS( );
MS.Display( );
}

Paper By Mr. MRK
Email Id : [email protected]@yahoo.com