Compilare: user.cpp: In function ‘void read_data()’: user.cpp:9: warning: format ‘%d’ expects type ‘int*’, but argument 3 has type ‘short int*’ user.cpp:12: warning: format ‘%d’ expects type ‘int*’, but argument 3 has type ‘short int*’ user.cpp:9: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:12: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘short int check(short int)’: user.cpp:42: warning: ‘sol’ may be used uninitialized in this function