Compilare: user.cpp: In function ‘void printa()’: user.cpp:29: warning: comparison between signed and unsigned integer expressions user.cpp:32: warning: comparison between signed and unsigned integer expressions user.cpp:38: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int getnr(int, int)’: user.cpp:46: warning: comparison between signed and unsigned integer expressions user.cpp:46: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int main()’: user.cpp:103: warning: comparison between signed and unsigned integer expressions user.cpp:109: warning: comparison between signed and unsigned integer expressions user.cpp:113: warning: comparison between signed and unsigned integer expressions user.cpp:63: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:64: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result