Compilare: user.cpp: In function ‘int poloneza(char*)’: user.cpp:63:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] polo[++tpolo]=val[s[i]]; ^ user.cpp: In function ‘void back(int)’: user.cpp:94:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(k==litere.size()) { ^ user.cpp:99:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] val[litere[k]]=0; ^ user.cpp: In function ‘int main()’: user.cpp:104:34: 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:105:36: 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:107:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n",&T); ^ user.cpp:109:20: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(alpha); ^ user.cpp:110:19: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(beta); ^ /tmp/ccmLrAzR.o: In function `main': user.cpp:(.text.startup+0x88): warning: the `gets' function is dangerous and should not be used.