Introduction of Control Statement

This Statement is used when we want to change the normal execution of the program then we need to use control statements or we can say control statements are used to change the flow of programe
it can excute the program which included in { }.they are mainly three type

1 Condition  Control Statements (Selective statement)
2 Looping  Statements (Iterative Statements)
3 Branching Statements

1. Condition  Control Statements - These are used to executed the statement of  block of statements according to some  condition.  it  test  the  condition First if condition is  true then it execute the first statement  .otherwise execute second condition.There types are given below .
1 if Statement
2 if else Statement
3 if else if Statement
4 Nested if
5 Switch case

  if   Statement   it  is  the Basic condition control statement  in this we can use single condition .the if statement allows a programmer to test the value of conditional expression and to select or reject the execution of the statement of block of statements depending on this value..if the condition is true then statement is executed .
Syntax :
               if (Condition )
           {
               statement 1;
               statement 2;      

                    } 

if else  statement  it can performe the two different  operation in the programe .if condition  is true then execute the first statement ..if condition is wrong  then it execute the wrong part ..

Syntax 
               if (condition )
             {
                statement 1;
               }
            
             else
           {
                statement 2;
                } 

if else if     if we have more than  two conditions then we use if else if   statement. in this we can create multiple blocks of  statements  and   statements will  execute according  to the condition .

Syntax  
               if (condition )
             {
                statement ;
               }
            
             else if
           {
                statement ;
                } 
             else

           {
                wrong statement ;
                } 

 Nested if       it means something inside something .it execute  if condition  which inside to another if  condition

syntax

     if (condition )
             {
                if (condition )
               {
                  statement ;
                }
            
             else

           {
                statement ;
                } 
             else

           {
                 statement ;
                } 

switch statement    when we have multiple if  statements then we can use switch case   statement .The variable used in switch is know as switch variable .the variable also contain the default statement can be of int or char type only .The switch statement can  also contain the default statements that will be executed if none of the case is executed defult  is optional .

                                

syntax ..        switch (expression )
                      {
                     case 1:
                      statement 1;
                     break;
                    case 2:
                      statement 2;
                     break;
                    case 3:
                      statement 3;
                     break;
                      default: 
                      worng   statement ;
                     break;
                     }