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Diffstat (limited to 'source/arduino/incrementcompound.rst')
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diff --git a/source/arduino/incrementcompound.rst b/source/arduino/incrementcompound.rst new file mode 100644 index 0000000..0005fbc --- /dev/null +++ b/source/arduino/incrementcompound.rst @@ -0,0 +1,49 @@ +.. _arduino-incrementcompound: + ++= , -= , \*= , /= +================== + +Description +----------- + +Perform a mathematical operation on a variable with another +constant or variable. The += (et al) operators are just a +convenient shorthand for the expanded syntax, listed below. + + + +Syntax +------ + +:: + + x += y; // equivalent to the expression x = x + y; + x -= y; // equivalent to the expression x = x - y; + x *= y; // equivalent to the expression x = x * y; + x /= y; // equivalent to the expression x = x / y; + + + +Parameters +---------- + +x: any variable type + + + +y: any variable type or constant + + + +Examples +-------- + +:: + + x = 2; + x += 4; // x now contains 6 + x -= 3; // x now contains 3 + x *= 10; // x now contains 30 + x /= 2; // x now contains 15 + + |