Compilare: user.cpp: In function ‘int cautare(long long int)’: user.cpp:18:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<mhash[linie].size();++i) ^ user.cpp: In function ‘int main()’: user.cpp:31:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0;j<=strlen(s)-1;++j) { ^ user.cpp:49:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0;j<=strlen(s)-1;++j) { ^