Compilare: user.cpp: In function ‘int main()’: user.cpp:26: warning: left-hand operand of comma has no effect user.cpp:26: warning: right-hand operand of comma has no effect user.cpp:29: warning: format ‘%f’ expects type ‘double’, but argument 3 has type ‘int’ user.cpp:14: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:18: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result