Compilare: user.cpp: In function ‘int main()’: user.cpp:75:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("hamster.in", "r", stdin); ^ user.cpp: In function ‘void Next()’: user.cpp:113:45: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread (sir, 1, maxl, stdin), pos = 0; ^ user.cpp: In function ‘int main()’: user.cpp:45:27: warning: ‘ras’ may be used uninitialized in this function [-Wmaybe-uninitialized] write_ch(vu32 % 10 + '0'); ^ user.cpp:94:28: note: ‘ras’ was declared here int p = 1, u = K, mij, ras; ^