Compilare: user.cpp: In function ‘int poloneza(char*)’: user.cpp:64:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] polo[++tpolo]=val[s[i]]; ^ user.cpp: In function ‘void back(int)’: user.cpp:95:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(k==litere.size()) { ^ user.cpp:100:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] val[litere[k]]=0; ^ user.cpp: In function ‘int main()’: user.cpp:105:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("logic.in","r",stdin); ^ user.cpp:106:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("logic.out","w",stdout); ^ user.cpp:108:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n",&T); ^ user.cpp:110:20: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(alpha); ^ user.cpp:111:19: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(beta); ^ /tmp/ccyTkqO5.o: In function `main': user.cpp:(.text.startup+0x88): warning: the `gets' function is dangerous and should not be used.