Compilare: user.cpp: In function ‘int cmp(int, int)’: user.cpp:23: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp: In function ‘void read()’: user.cpp:34: warning: format ‘%d’ expects type ‘int*’, but argument 3 has type ‘long long int*’ user.cpp:34: warning: format ‘%d’ expects type ‘int*’, but argument 4 has type ‘long long int*’ user.cpp:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int cmp(int, int)’: user.cpp:28: warning: control reaches end of non-void function