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$ans .If you want to use the
**value**that was evaluated in the earler step, use a special variable named $ans. $pi .The**value**of the variable $pi is 3.1415926535. <well> Samp... cs Functions </well> abs, fabs fabs(x) - absolute**value**functions returns the absolute**value**of x, |x|. mod, fmod fmod(x, y) - remainder functions returns the