fixed Bit operators clerical error
Merge pull request #19 from miraclesu/4.5bit

fixed Bit operators clerical error
escape character 译成 "转义字符"
修改标点符号
Merge pull request #20 from miraclesu/4.6strings

escape character 译成 "转义字符" 是不是更好点？
Merge pull request #21 from miraclesu/4.7

把一些中文标点改成英文标点
05.0.md
Merge remote-tracking branch 'origin'
05.1.md