comparison between signed and unsigned integer expressions

johnx123 2008-04-07 11:27:52

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comparison between signed and unsigned integer expressions

什么意思？

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星羽 2008-04-08

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http://qzone.qq.com/blog/12373695-1203047678

geniuscaobo 2008-04-07

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有符号与无符号整数的比较表达式

abupie 2008-04-07

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comparison between signed and unsigned integer expressions, unsigned和signed比较。

最好的方法是根据实际情况统一为signed或者unsigned，如果不方便统一，下面这样做是比较好的方法：
1. Signed和0比较, >=0则继续，否则退出比较;
2. 强制转换Signed, 再和unsigned比较;
而不直接强制转换比较的理由是存在风险，比如对于(char) -1和(unsigned char)255无论如何强制转换都是相等的。

Appendix A Differences between MASM 6.0 and 5.1 Appendix B BNF Grammar Appendix C Generating and Reading Assembly Listings Appendix D MASM Reserved Words Appendix E Default Segment Names Appendix F ...

Tabs Function Declarations and Definitions Function Calls Conditionals Loops and Switch Statements Pointer and Reference Expressions Boolean Expressions Return Values Variable and Array ...

Logical Operations on Bits 1.6 - Logical Operations on Binary Numbers and Bit Strings 1.7 - Signed and Unsigned Numbers 1.8 - Sign and Zero Extension 1.9 - Shifts and Rotates 1.10 - ...