Nested if statement in C++

In nested if statement, one if statement block is enclosed within another if statement block. The syntax of nested if statement is:
if(Test-Condition-1)
{
            if(Test-Condition-2)
            Statement-Block-1;
            else      
            Statement-Block-2;
}
else
{
            if(Test-Condition-3)
            Statement-Block-3;
            else      
            Statement-Block-4;
}

Test-Condition-1, Test-Condition-2 and Test-Condition-3 are conditions

Initially Test-Condition-1 condition is evaluated. If it is true, Test-Condition-2  condition is evaluated. If Test-Condition-2 is also true, Statement-Block-1 of statements gets executed. If Test-Condition-2 condition is false, Statement-Block-2  of statements is executed. If Test-Condition-1  condition is false, Test-Condition-3 condition is evaluated. If it  is true, Statement-Block-3 of statements gets executed. if Test-Condition-3 is false, Statement-Block-4 of statements gets executed.

int main()
{
int n;
 cout<<“\nEnter a value=";
 cin>>n;
 if(n>=0)
 {
        if(n<=10)
          cout<<“Value lies between 0 and 10";
        else
          cout<<“Value is larger than 10";
 }
 else
        cout<<“Value is smaller than 0";
return(0);  
}

Enter a value:=11
Value is larger than 10

In the above program, value of variable n has been entered 3. 

Test condition if(n>=0) is true, So condition if(n<=10) is also checked. This  condition is also true so statement cout<<“Value lies between 0 and 10″; gets executed.