Compilare: main.cpp: In function 'int main()': main.cpp:52:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0 ; i < s.length() ; i++) { ~~^~~~~~~~~~~~ main.cpp:63:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1 ; i < s.length() ; i++) ~~^~~~~~~~~~~~ main.cpp:66:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int len = 1 ; len < s.length() ; len++) { ~~~~^~~~~~~~~~~~ main.cpp:71:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i + getLength(nr) < s.length() && nr == getValue(i, i + len)) { ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~ main.cpp:76:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i + getLength(nr) >= s.length() && getValue(i, s.length() - 1) == (nr >> i + getLength(nr) - s.length() + 1)) { ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~ main.cpp:76:121: warning: suggest parentheses around '+' inside '>>' [-Wparentheses] if (i + getLength(nr) >= s.length() && getValue(i, s.length() - 1) == (nr >> i + getLength(nr) - s.length() + 1)) { ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~