Compilare: main.cpp: In function 'int complementare()': main.cpp:72:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=strlen(x)-1; i>=strlen(x)-s; i--) ~^~~~~~~~~~~~~ main.cpp:77:15: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(ok==1) ^ main.cpp: In function 'int citire()': main.cpp:95:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^