zeratul.cpp: In function 'int main()': zeratul.cpp:128: warning: comparison between signed and unsigned integer expressions zeratul.cpp:112: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result zeratul.cpp:113: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result zeratul.cpp: In function 'void reconst(int, int, int, int)': zeratul.cpp:89: warning: 'besti' may be used uninitialized in this function