Compilare: main.cpp: In function 'int main()': main.cpp:11:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (poz < s1.size ()){ ~~~~^~~~~~~~~~~~ main.cpp:20:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (poz < s2.size ()){ ~~~~^~~~~~~~~~~~ main.cpp:23:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (ind == s1.size ()){ ~~~~^~~~~~~~~~~~~ main.cpp:27:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if (poz < s2.size () && s1 [ind] != s2 [poz]){ ~~~~^~~~~~~~~~~~