Basics of Computer

Q.1:- Differentiate the following terms with suitable examples.

1. Variable Declaration and Variable Definition.

2. Identifier, Constant and Variable

3. Operands, Operators and Expression

Q.2:- What will be the output of the following program segment. Explain the output.

 main ()

{

int a=2, b=3, x, y;

float w, z;

x= a/b * b;

y = b/a * a;

w = a/b *b;

z = b/a * a;

printf( “%d%d %f %f *, a.b,w,z);

}

Q.3:- a) What is decision control structure ? Explain the if statement and if-else statement with the help of an example.

        b) Explain Break statement with example.

Q.4:-Write a program which find and Print the largest of three numbers by using nested IF  statement.  

Q5:- a)What is loop? Explain For Loop with the help of an example.

         b) What will be the output of the following program segment.

main ( )

{

int i;

For (i=l;i <=5; printf (“ln%d”, i))

i++;

}

Q.6:- a) What is Preprocessor Directive? Why we use # include Preprocessor Directive in the start of program?

       b) What is Header file? Give some examples of Header files are used in C/C++ Language.

Q.7:-Explain the following operators with the help of an example.

a) Compound Assignment Operators.

b) Increment & Decrement Operators.

c) Conditional Operator.

Q.8:-Differentiate the following built-in functions.

a) Printf () and Scanf ()

b) geleh () and Putch ()

c) Puts () and gels ()

d) Strlen () and Strlwr ()

e)  Pow () and Sqrt ()