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- Dictionarynegative/ˈnɛɡətɪv/
adjective
- 1. consisting in or characterized by the absence rather than the presence of distinguishing features.
- 2. (of a person, attitude, or situation) not desirable or optimistic: "the new tax was having a negative effect on car sales" Similar Opposite
noun
- 1. a word or statement that expresses denial, disagreement, or refusal: "she replied in the negative"
- 2. a negative photographic image made on film or specially prepared glass, from which positive prints may be made: "photographs and negatives should be supplied for enlargement purposes"
verb
- 1. refuse to accept; reject: "the bill was negatived on second reading by 130 votes to 129" Similar Opposite
- 2. render ineffective; neutralize: "should criminal law allow consent to negative what would otherwise be a crime?" Similar
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Apr 8, 2013 · It is absolutely legal to define negative constants with #define. What you discovered is most likely a bug in Xcode's code coloring, which will probably be fixed in one of the future revisions. Grammatically, the - is not part of the number. It is a unary operator. Hence the “Numbers” coloring doesn't apply.
Aug 12, 2021 · It could be the compiler, I just find debuggers more buggy than compilers. Seeing more of the code, as text, would help. -2147483648 is a two step: negation of the constant 2147483648. 2147483648 is outside the int and long range here, so is type long long. To form the int value of -2147483648, avoid constants outside the int range.
Jul 21, 2016 · However, I would like the values to be negative, so they do not conflict with anything else. I could do it like this: typedef enum fruits{. apple = -1, banana = -2, lemon = -3, orange = -4. } fruit_t; But if I would like to add another fruit, I have to assign another value, and if I put one inbetween, I have to renumber most of it.
Jun 24, 2016 · 8. Define a enumerator with that value in the enumerator list and the result will be correct: typedef enum test {. minus_one = -1 , first, second, } soc_ctr_type_t; The reason you're seeing 255 is because the compiler chose a narrower unsigned type for this enumerator, because all it can see it first, second, which have the values 0, 1.
Mar 2, 2013 · In Python 3 you have (at least) four choices: Use min (A) - 1. Use None, and whenever you compare two values, explicitly test for them being None. Define a new data type that consists of either an integer or -∞, and handles comparisons correctly. Modify the algorithm so that line 2 is eliminated. You will have to patch Heap-Increase-Key somehow.
Mar 16, 2010 · Using a while loop at all is rare. for i in xrange(num_times): total += a # We do this a times, giving us total == a * abs(b) if b < 0: # If b is negative, adjust the total to reflect this. total = -total print total or maybe. a * b
Aug 26, 2016 · #define FLAG 0x80001000u When the u for unsigned is not present and because you have 4 bytes on a 32bit machine, the compiler assumes that the value is signed and 0x80001000 = -2147479552 . I'm not sure if defining reset_value as a uint32_t is good practice. Could I do this as a #define. You can of course write #define RESET_VALUE 0.
Jul 13, 2015 · 1. This isn't specific to C++, but rather about 2's complement form. In 2's complement, the most-significant bit doesn't merely indicate the sign (that the value is negative) but is rather that power of 2 (that is, for an 8-bit 2's complement number, the most significant bit would represent -2^7). To make the most negative number, only the most ...
The initializer converts this value from int to unsigned int. The rules for signed-to-unsigned conversion say that the value is reduced modulo UINT_MAX + 1, so -1 will convert to UINT_MAX (which is probably 0xffffffff or 4294967295 if unsigned int is 32 bits). You simply cannot assign a negative value to an object of an unsigned type.
Jun 27, 2015 · About why would someone want to use negative indexes, I have used them in two contexts: Having a table of combinatorial numbers that tells you comb[1][-1] = 0; you can always check indexes before accessing the table, but this way the code looks cleaner and executes faster. Putting a centinel at the beginning of a table.
