Compilare: user.cpp: In function ‘int main()’: user.cpp:39:80: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] if(ultima_aparitie[floare] == 0 || (ultima_aparitie[floare] != 0 && t[i] != t[ultima_aparitie[floare]] & ultima_aparitie[floare] != i)) ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ user.cpp:25:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("flori.in","r",stdin); ^ user.cpp:26:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("flori.out","w",stdout); ^ user.cpp:28:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:38:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&floare); ^