Compilare: user.cpp: In function ‘void cit(int&)’: user.cpp:17:42: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if (ch[0]=='\0') fread (ch, 1, hg, f); ^ user.cpp:20:46: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread (ch, 1, hg, f), poz = 0; ^ user.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 (ch, 1, hg, f), poz = 0; ^