Compilare: user.cpp: In function ‘int main()’: user.cpp:26:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i <= strlen (x) - 1; i++) { ^ user.cpp:38:54: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (cur_size + strlen (v[i]) + cur_nr <= spat) { ^ user.cpp:46:24: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (j != i - 1) ^ user.cpp:25:13: warning: unused variable ‘all’ [-Wunused-variable] int all = strlen(x); ^