Write a program that displays the value of the mathematical constant
编写一个程序用来显示数学常量的值
It's a mathematical constant representing the ratio of any circle's circumference to its diameter.
pai是一个数学常量，代表圆周长跟直径的比值。
The golden ratio, also known as the divine proportion, is an irrational mathematical constant with a value of approximately 1.618033987.
黄金分割比率也称为神圣分割比例，它是一个数学无理常数，其值约为1.618033987。
The golden ratio, also known as the divine proportion, is an irrational mathematical constant with a value of approximately 1.618033987.
黄金分割比率也称为神圣分割比例，它是一个数学无理常数，其值约为1.618033987。
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