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Floating Point variables

The numbers 5.5, 8.3, and -12.6 are all floating-point numbers. Floating-point numbers must contain a decimal point. So 5.0 is a floating-point number, while 5 is an integer. You could omit digits before the decimal point and specify a number as .5 instead of 0.5 A floating-point zero should be written as 0.0. The floating-point number may include an exponent specification of the form:e + exp For example, 1.2e34 is a shorthand version of 1.2*10^34.