Coding Basics: Variables

Example 1:

x = 5;

y = 3;

z = x + y;   //z holds the value 8

Example 2:

a = 7;

a = a + 3;   //a holds the value 10

Example 3:

b = 5;

b += 2;  //this is a shortcut for b = b + 2, so b now holds the value 7.

Example 4:

c = 3;

c++;  //this is a shortcut for c = c + 1, so c now holds the value 4.

Example 5:

d = 5 < 3;    //d holds the value false

e = 8 > 6;    //e holds the value true

f = d || e;    //f holds the value true.  The || symbol represents the inclusive "OR".  If either d or e (or both) are true, then f is true.

Example 6:

g = true;

h = false;

i = g && h;      //i holds the value false.  The && symbol represents "AND".  If g and h are both true, then i is true.

Example 7: 

j = 5.3;

k = 2.4;

l = j + k; //l holds the value 7.7

Example 8: 

m = 5 + 3 *4;   //m holds the value 17 (Order of Operations)