What function would you guys recommend to use for comparing files. Ex. I have a file called macs1 and another called macs2 each file holds a list of mac addresses in it and nothing else. What I want to do is compare the 2 files and whichever mac address shows up in both files output it to a new file. Thanks
there is no C function that will do that for you - just read the addresses into two arrays, set up two nested loops and do the comparison.
that won't prevent duplicates of course...Code:for(int i = 0; i < a_size; ++i) { for(int j = 0; j < b_size; ++j) { if(a[i] == b[j]) { // send to the file } } }
Last edited by Sebastiani; 09-08-2004 at 08:00 PM.
Code:#include <cmath> #include <complex> bool euler_flip(bool value) { return std::pow ( std::complex<float>(std::exp(1.0)), std::complex<float>(0, 1) * std::complex<float>(std::atan(1.0) *(1 << (value + 2))) ).real() < 0; }
The unix/linux 'comm' utility will do this for you
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