condition in C++

 what is the condition?

It is a way to know the information that I have set or who enters by a user if it is true or wrong,more conditions for use:

• Less than: a < b
• Less than or equal to: a <= b
• Greater than: a > b
• Greater than or equal to: a >= b
• Equal to a == b
• Not Equal to: a != b

and there are two ways:

1-if :

• Use if to specify a block of code to be executed, if a specified condition is true for example:

int x=10;
if (x > 8)
  cout << "x is greater than 8";

• Use else to specify a block of code to be executed if the same; condition is false for example:

int x=13;
if (x > 18)
  cout << "x is greater than 18";

else

    cout<<"x is lower than 18";

• Use else if to specify a new condition to test, if the first condition is false for example:

int x=13,y=20;
if (x > 18)
  cout << "x is greater than 18";

else if(y==20)

    cout<<" y is equal to 20";

2-switch: Use switch to specify many alternative blocks of code to be executed for example:

int x=2;

switch(x){

case 1:cout<<"x is equal 1";break;

case 2:cout<<"x is equal 2";break;

case 3:cout<<"x is equal 3";break;

default:cout<<"not found";

}