CH04 : Control Statement in C

Two types of Control Statement :

• if-else statement
• switch statement

If-else statement

### `If-else` :

If-else statement is used to execute a statement block or a single statement depending on the value of a condition.

**syntax** : ```c if (condition) { ------------ ------------ } else { ------------- ------------- } ``` Where `conditon` is a logical expression which will have the value of true or false. </details>

Nested if-else statement

### nested if-else statement

An if statement may have another if statement in the `true block` and `false block`.This compound statement is called nested if statement.

**syntax** : ```c if (condition 1) { if (condition 2) { -------------- <true block 1> -------------- } else { ------------- <false block 1> ------------- } } else { if (condition 3) { -------------- <true block 2> -------------- } else { --------------- <false block 2> --------------- } } ```

Switch Statement

### switch statement

switch statement is used to create a block of statements depending on the value of a variable or an expression.

**syntax** : ```c switch ( ) { case <label 1>: { ------------- <statement block 1> ------------- break; } case <label 2>: { ------------- <statement block 1> ------------- break; } case : { ------------- ------------- break; } default: { ------------- ------------- break; } } ``` where `` refers to any `int` or `char` expression or variable.
`<label 1>`, `<label 2>`...`` are values which will match with the value of the expression.
**break** is a statement which will transfer the control to the end of **switch** statement. </details>

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