Compilare: main.cpp: In function 'int Update(int, int, int, int, int)': main.cpp:81:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int Build(int, int, int)': main.cpp:92:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'void Read(int&)': main.cpp:44:42: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(f, MAX, 1, IN), pos = 0; ^ main.cpp:49:42: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(f, MAX, 1, IN), pos = 0; ^