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PROGRAM: MCA (REVISED FALL 2012)
SEMESTER: FIRST
SUBJECT CODE & NAME: MCA1020- PROGRAMMING IN C
CREDIT: 4
BK ID: B1639
MAX. MARKS: 60
Q1.
Explain the history of C language. What are the advantages of C language?
Answer:
The C programming language was
devised in the early 1970s by Dennis M. Ritchie an employee from Bell Labs
(AT&T).
In the 1960s Ritchie worked, with
Q.2:
Differentiate between formal parameters and actual parameters with example
ANS:
Parameters (also called formal parameters)
or arguments are the special identifiers through which information can be
passed to the function. A function has a body
containing the actual instructions (statements) for carrying out
Q.3:
Describe about static and external variables.
ANS:
Static Variables
Static variables are defined
within individual functions and therefore have the same scope as automatic
variables, i.e. they are local to the functions in which they are declared.
Unlike automatic variables, however, static variables retain their values
throughout the life of the program. As a result, if a function is exited and
then reentered later, the static variables defined within that function will
retain their previous values. This feature allows functions to retain
information permanently throughout the execution of a program. Static variables
Q.4: Distinguish between pass by
value and pass by reference with the help of an example.
ANS:
Pass
by value:
Pass by value may be very
inefficient if the structure is large (i.e., has many members). They have
identical declaration
Q.5:
Define macro. How we can declare a macro statement? Explain with an example.
ANS:
A preprocessor line of the form
#define name text
Defines a macro with the given name, having as its value the given replacement text. After that (for the rest of
the current source file), wherever the preprocessor sees that name, it will
replace it with the replacement text. The name follows
Q.6: What is the use of fopen ()
and fclose () function? List and explain different modes for opening a file.
ANS:
fopen():
To open the file
Get fully solved assignment. Buy online from website
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