Compilare: user.cpp: In function ‘int match(int)’: user.cpp:29:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; (i < curr.size()) && (find == 0); i++) { ^ user.cpp:31:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while ((i + j < curr.size()) && (j < s[pos].size())) { ^ user.cpp:31:54: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while ((i + j < curr.size()) && (j < s[pos].size())) { ^ user.cpp:37:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ((flag == 0) && (j == s[pos].size())) { ^ user.cpp:42:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^