Increment and Decrement Operators (++, --) — Maple v0.0.11 Documentation

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# Increment and Decrement Operators (`++`, `--`)

These operators increment (add one to) or decrement (subtract one from) a variable. If they come before the variable, they return its new value; otherwise, they return its old value.

Some quick examples:

    x++;  // adds one to x, and returns the old value of x
    ++x;  // adds one to x, and returns the new value of x

    x--;   // decrement x by one and returns the old value of x
    --x;   // decrement x by one and returns the new value of x

A more extended example:

    x = 2;
    y = ++x;      // x now contains 3, y contains 3
    y = x--;      // x contains 2 again, y still contains 3

Warning

Be careful! You cannot put a space in between the two `+` or `-` signs. This example is broken:

    // this line won't compile (notice the extra space):
    int y = x+ +;

## See Also

- Compound Arithmetic Operators (+= , -=, *=, /=)

License and Attribution

Portions of this page were adapted from the Arduino Reference Documentation, which is released under a Creative Commons Attribution-ShareAlike 3.0 License.

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