用C++语言描述分数类，并进行各种运算

[{"title":"（ 13 个子文件 233KB ） 用C++语言描述分数类，并进行各种运算","children":[{"title":"second","children":[{"title":"分数.cpp <span style='color:#111;'> 4.34KB </span>","children":null,"spread":false},{"title":"分数.opt <span style='color:#111;'> 47.50KB </span>","children":null,"spread":false},{"title":"分数.ncb <span style='color:#111;'> 49.00KB </span>","children":null,"spread":false},{"title":"分数.plg <span style='color:#111;'> 738B </span>","children":null,"spread":false},{"title":"Debug","children":[{"title":"分数.ilk <span style='color:#111;'> 242.27KB </span>","children":null,"spread":false},{"title":"分数.pdb <span style='color:#111;'> 417.00KB </span>","children":null,"spread":false},{"title":"vc60.pdb <span style='color:#111;'> 60.00KB </span>","children":null,"spread":false},{"title":"vc60.idb <span style='color:#111;'> 41.00KB </span>","children":null,"spread":false},{"title":"分数.pch <span style='color:#111;'> 238.65KB </span>","children":null,"spread":false},{"title":"分数.obj <span style='color:#111;'> 20.38KB </span>","children":null,"spread":false},{"title":"分数.exe <span style='color:#111;'> 212.09KB </span>","children":null,"spread":false}],"spread":true},{"title":"分数.dsw <span style='color:#111;'> 516B </span>","children":null,"spread":false},{"title":"分数.dsp <span style='color:#111;'> 3.30KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}]