Compilare: user.cpp: In function ‘int main()’: user.cpp:57: warning: format ‘%c’ expects type ‘char*’, but argument 3 has type ‘long int*’ user.cpp:59: warning: format ‘%c’ expects type ‘char*’, but argument 3 has type ‘long int*’ user.cpp:54: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:57: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:59: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result