Compilare: user.cpp: In function ‘void citeste()’: user.cpp:60: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:62: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘void sterge()’: user.cpp:71: warning: unused variable ‘j’ user.cpp: In function ‘int main()’: user.cpp:123: warning: unused variable ‘x’ user.cpp:123: warning: unused variable ‘y’ user.cpp:137: warning: unused variable ‘sir’