Compilare: user.cpp: In function ‘int check(int, char*, int*)’: user.cpp:17:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (l == W && L != strlen(s)) return check(L-1,s,v); ^ user.cpp:18:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (L != strlen(s) && l + 3 > W) return check(L-1,s,v); ^ user.cpp:19:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (L != strlen(s) && l + 3 <= W) return L-1; ^ user.cpp:20:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (L == strlen(s) && l <= W) return L-1; ^ user.cpp: In function ‘int main()’: user.cpp:27:19: warning: variable ‘ltemp’ set but not used [-Wunused-but-set-variable] int i, v[28], ltemp, l, length, save; ^ user.cpp:27:26: warning: unused variable ‘l’ [-Wunused-variable] int i, v[28], ltemp, l, length, save; ^ user.cpp:35:9: warning: unused variable ‘pos’ [-Wunused-variable] int pos; ^ user.cpp: In function ‘int check(int, char*, int*)’: user.cpp:21:1: warning: control reaches end of non-void function [-Wreturn-type] } ^