Performing Math with Variables

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Performing Math with Variables

You can also assign numerical values to a variable by using mathematical operators such as addition(+), subtraction (-), multiplication (*) and division (/). Consider the following valid programming statements:

x = y + 2;

This statement adds the value of 2 and y, and assigns that value to x.

theAreaOfMyCircle = 3.1415 * r * r;

This statement multiplies the variable r to itself, multiplies that value to 3.1415, and then assigns that value to theAreaofMyCircle.

x = x + 17;

The third statement is somewhat more tricky. From a programming standpoint however, the statement merely adds 17 to the current value of x, and then stores that new value in x. After processing the statement, x now equals 17 more than it did previously.

Finally, you can assign a value to a variable using a function.

x = SomeRandomFunction(y, z, 17);

 

For more information, see About CPL Functions.

For more information on using arethmetic operations, see Operators and Operands in the CPL Language reference.