Compilare: user.cpp: In function ‘int main()’: user.cpp:59: warning: format ‘%lf’ expects type ‘double’, but argument 3 has type ‘int’ user.cpp:59: warning: format ‘%lf’ expects type ‘double’, but argument 4 has type ‘int’ user.cpp:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:40: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:41: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result