Compilare: user.cpp: In function ‘void schimba(int, int)’: user.cpp:13:11: warning: unused variable ‘d’ [-Wunused-variable] int c,d; ^ user.cpp: In function ‘void taiecopac(int)’: user.cpp:51:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<drum[x].size();i++) ^ user.cpp: In function ‘int calc(int)’: user.cpp:77:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<drum[tata].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:93:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cezar.in","r",stdin); ^ user.cpp:94:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cezar.out","w",stdout); ^ user.cpp:95:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&k); ^ user.cpp:98:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^