Fbise Notes-Computer

Input and Output Handling Long Questions Ch. No 3

Q.No1 Describe how basic and compound assignment operators are used?

Ans: Basic Assignment Operator:

The basic assignment operator is = . this is used to assign value of an expression to a variable. It has the general form:

variable = expression

where expression may be a constant, another variable to which a value has been assigned or a formula to be evaluated. For example:

sum = a + b;

Compound Assignment Operator:

In addition to = , there are a number of assignment operators unique to C. these include +=, -=, /= and %= etc. suppose op represents an arithematic operator. Then, the compound assignment operator has the following general form.

variable op = expression

This is equivalent to:

variable = variable op expression

For example:

sum = sum + n; or sum += n;

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Q.No2 Describe the functions of the following operators?

Ans: Relational Operator:

These are used to compare two values of the same type. These are used in expressions when a decision is to be based on a condition. After evaluation of a relational expression, the result produced is either True or False. These operators are used for decision making.

Types of Relational Operators:

Six types of relational operators are available in C. These are;