Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:26:30: error: ‘memset’ was not declared in this scope memset(arr,-1,sizeof(arr)); ^ user.cpp:45:31: error: ‘memset’ was not declared in this scope memset(arr,-1,sizeof(arr)); ^ user.cpp:10:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("trenul.in","r",stdin); ^ user.cpp:11:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("trenul.out","w",stdout); ^ user.cpp:17:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&c); ^