Compilare: user.cpp: In function ‘int check(double)’: user.cpp:14: warning: unused variable ‘j’ user.cpp:14: warning: unused variable ‘p’ user.cpp: In function ‘int main()’: user.cpp:54: warning: unused variable ‘j’ user.cpp:54: warning: unused variable ‘p’ user.cpp:54: warning: unused variable ‘q’ user.cpp:56: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:58: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result