Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:14: warning: comparison between signed and unsigned integer expressions user.cpp:16: warning: comparison between signed and unsigned integer expressions user.cpp:22: warning: comparison between signed and unsigned integer expressions /usr/include/stdio.h:214: error: too few arguments to function ‘int fclose(FILE*)’ user.cpp:27: error: at this point in file user.cpp:28: error: ‘gclose’ was not declared in this scope