Compilare: user.cpp: In function ‘void convert(char*, int, int)’: user.cpp:66:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (bmax <= x) ^ user.cpp: In function ‘int main()’: user.cpp:90:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < strlen(s); ++i) ^ user.cpp:91:50: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 1; i + j <= strlen(s) && j <= 40; ++j) { ^ user.cpp:103:47: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (s[k] == '0' && k + 1 < strlen(s)) ^