Compilare: main.cpp: In function 'void get_int(int&)': main.cpp:14:39: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buffer , sz , 1 , stdin); ^ main.cpp:23:39: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buffer , sz , 1 , stdin); ^ main.cpp: In function 'int main()': main.cpp:31:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("secventa.in" , "r" , stdin); ^ main.cpp:32:43: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("secventa.out" , "w" , stdout); ^ main.cpp:59:33: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized] printf("%d %d %d\n" , x , x + k - 1 , base); ~~^~~