Compilare: main.cpp: In function 'void prefix()': main.cpp:14:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=2;i<=s.length();i++) ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:48:27: warning: variable 'ok' set but not used [-Wunused-but-set-variable] int verif=2*l,ok=1,currmax=0,hasfr=0; ^~ main.cpp:48:32: warning: unused variable 'currmax' [-Wunused-variable] int verif=2*l,ok=1,currmax=0,hasfr=0; ^~~~~~~