Compilare: user.cpp: In function ‘int main()’: user.cpp:15:23: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] while('a' <= prev && prev <= 'z' || 'a' <= c && c <= 'z'){ ^ user.cpp:33:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < ind[1].size(); j++) ^ user.cpp:12:9: warning: unused variable ‘ok’ [-Wunused-variable] int ok = 1, last = 0; ^ user.cpp:30:9: warning: variable ‘best’ set but not used [-Wunused-but-set-variable] int best, nr; ^ user.cpp:15:23: warning: ‘prev’ may be used uninitialized in this function [-Wmaybe-uninitialized] while('a' <= prev && prev <= 'z' || 'a' <= c && c <= 'z'){ ^