Compilare: user.cpp: In function ‘long long unsigned int citeste(int&, int, int)’: user.cpp:11:62: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (instrtabel[x][y][i]!='+'&&i<instrtabel[x][y].size()) ^ user.cpp: In function ‘long long unsigned int rez(int, int)’: user.cpp:41:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<instrtabel[x][y].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:62:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=1; i<=n; i++) ^ user.cpp:64:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=1; j<=n; j++) ^ user.cpp:72:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=1;i<=n;i++) ^ user.cpp:74:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=1;j<=n;j++) ^