Compilare: user.cpp: In function ‘int main()’: user.cpp:51:7: warning: variable ‘finish’ set but not used [-Wunused-but-set-variable] int finish=0; ^ user.cpp:38:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] { freopen("palindrom3.in","r",stdin); freopen("palindrom3.out","w",stdout); ^ user.cpp:38:75: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] { freopen("palindrom3.in","r",stdin); freopen("palindrom3.out","w",stdout); ^ user.cpp:40:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(i=0;i<=9;i++) scanf("%d ",&perm[i]); ^ user.cpp:41:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s\n",A+1); ^ user.cpp:43:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n",&K); ^