Advanced Minds

The For Loop use a for loop when you know how many times you want something to run. For example, we want to have an application that counts from 0 to 50 and count by fives. To do this we would need a for loop. Here is how you do it:

Code you want to run. } Ok, so with our 0-50 program, we would do the following:

for(int x = 0; x < 51; x=x+5){

cout<<

If we wanted to count by ones, we would make the last statement x++.

While Loops - when you want to have something run multiple times, but you dont know how many, use a while loop. For example, we have a program that will ask if you want to exit and keep running until you type 'y'. Making a while loop is pretty simple:

while(case)
{
code...
}

How to write a case: Most are pretty easy, for example: x>8 However, they can get tricky: her is a list of operators to use:

Eqaul: ==
And: &&
Or: ||
Greater than or equal to: >=
Not Equal to: !=

The program that we are going to make checks if the user is writing a 'y'? So the case is going to be: While(exit!='y')

Full Code:

char exit = 'n';

while(exit=='n')

{

cout<<"Do you want to Exit (y/n)?";

cin>>exit;

}

If Statements - If you want something to run if something has a certain value, you can use an if statement. To do that, you type: if(case){code;}. If you want something to run that does not fit into that if case, you can use an else statement. To do that, you just write else{ code; } The example I am going to show you will ask someones age and say if they are old enough to drive or not:

int age;

cout<<"Age: ";

cin>>age;

if(age >=16){

cout<<"You are old enough";

}

else{

cout<<"You have "<<16-age<<" More years.";

}

cin>>age;