陈亮 开发者_JAVA百科 2021-04-02 00:34 半圆面积：S=(πr²)÷2公式说明：π是圆周率，等于3.14，r是圆的半径应用实例：半圆的半径r是3，面积S=πr²÷2=3.14x3^2÷2=14.13希望帮到你望采纳谢谢加油贺雄伟
If i have a header file foo.h and a source file foo.cpp, and foo.cpp contains something along the lines of:
加载中,请稍侯......