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I am looking through some C source code and I don't understand the following part
#if 1 typedef unsigned short PronId; typedef unsigned short LMId; # define LM_NGRAM_INT #else typedef unsigned int LMId; typedef unsigned int PronId; # undef LM_NGRAM_INT #endif Why would someone do #if 1? Isn't it true that only the first block will ever be processed?
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A and an are two different forms of the same word: the indefinite article a that is used before noun phrases. Use a when the noun or adjective that comes next begins with a consonant sound. Use an when the noun or adjective that comes next begins with a vowel sound.
"A" goes before words that begin with consonants. "An" goes before words that begin with vowels: an apricot. an egg.
A or an is the indefinite article. The form an is used before a word that starts with a vowel sound. The indefinite article is used with singular countable nouns: to refer to a person or a thing that you are mentioning for the first time in a conversation or a piece of writing.
The rule is: Use an before a word beginning with a vowel sound (not letter). It doesn't matter how the word is spelled. It just matters how it is pronounced. Use a before a word with a consonant sound as well as y and w sounds.
Yes.. Only the first block will be processed --- until someone changes the 1 to a 0. Then the other block will be compiled. This is a convenient way to temporary switch blocks of code in and out while testing different algorithms.
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