Eroare de compilare: user.cpp: In function ‘int determina()’: user.cpp:22: error: ‘abs’ was not declared in this scope user.cpp:11: warning: unused variable ‘p’ user.cpp: In function ‘int main()’: user.cpp:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result