Help | #define openjudge
Difference between en3 and en4, changed 40 character(s)
I was looking submission of other user and i noticed something common in them,↵
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 #ifdef ONLINE_JUDGE↵
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 #define OJ \↵
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freopen(file".in", "r", stdin); \↵
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freopen(file".out", "w", stdout);↵
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 #else↵
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 #define OJ ;↵
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 #endif↵
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I want to know how this works .Please help.↵
And how to use it and what does it do?↵

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  Rev. Lang. By When Δ Comment
en4 English ghost1733 2020-08-14 12:48:53 40 Tiny change: 'se help.\n' -> 'se help.\nAnd how to use it and what does it do?\n'
en3 English ghost1733 2020-08-14 12:40:14 2 Tiny change: 'in them,\n #ifdef ' -> 'in them,\n\n #ifdef '
en2 English ghost1733 2020-08-14 10:19:03 17
en1 English ghost1733 2020-08-14 10:16:28 287 Initial revision (published)