increment by jump of x

Projects General Guidance
1

i want that my program increment by jumps of x

so for exemple

2 + x = y
y = incrementation

2

No, really, just stop now.

Look at all the examples of C you've seen.
Ever seen an arithmetic expression on the left of the "="?

3

ok but i did not find it on the reference
its not my fault

4

The Arduino forum has a tutorial section, - http://arduino.cc/en/Tutorial/HomePage -

I propose you study the examples there, possibly modify them to see what happens.

Then you will get an idea how the Arduino programming language works.