Compilare: user.cpp: In function ‘void citeste()’: user.cpp:58: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:60: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘void sterge()’: user.cpp:65: warning: unused variable ‘x’ user.cpp:65: warning: unused variable ‘y’ user.cpp:66: warning: unused variable ‘l’ user.cpp: In function ‘int main()’: user.cpp:113: warning: unused variable ‘x’ user.cpp:113: warning: unused variable ‘y’