Compilare: main.cpp: In function 'void Read(int&)': main.cpp:26:42: 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:31:42: 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: In function 'void dei(int, int, int, int)': main.cpp:53:29: warning: 'idx' may be used uninitialized in this function [-Wmaybe-uninitialized] dei(st, mid - 1, l, idx); ^