Compilare: user.cpp: In function ‘void perechi(int)’: user.cpp:39: warning: comparison between signed and unsigned integer expressions user.cpp:42: warning: comparison between signed and unsigned integer expressions user.cpp:35: warning: unused variable ‘nr’ user.cpp: In function ‘void solve_nod(int, int, int)’: user.cpp:136: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int main()’: user.cpp:209: warning: comparison between signed and unsigned integer expressions user.cpp:185: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:188: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:191: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:194: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘void perechi(int)’: user.cpp:35: warning: ‘poz’ may be used uninitialized in this function