Compilare: main.cpp: In function 'void Read(int&)': main.cpp:25:42: 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:30:42: 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 'int main()': main.cpp:56:23: warning: 'idx' may be used uninitialized in this function [-Wmaybe-uninitialized] for(int i = idx + 1; i <= N; i++){ ^