dear cygwin/gcc users: I compile a simple code which i copied from a book, "The Complete Reference of C++" Fourth Edition by Herbert Schildt in page 575, rand() which is clearly not be included in #include <iostream> I tried #inlcude <cmath> it still not compile, i.e. same compile error please help(see which lib I should include) /* I tried in ubuntu linux on my laptop, it also not compile by same reason */ Eric
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