Compilare: user.cpp: In function ‘int main()’: user.cpp:56: 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 user.cpp:29: warning: ‘poz’ may be used uninitialized in this function user.cpp:62: note: ‘poz’ was declared here user.cpp:62: warning: ‘xmin’ may be used uninitialized in this function