Compilare: user.cpp: In function ‘void bordeaza()’: user.cpp:10:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<=n+1;i++) ^ user.cpp: In function ‘unsigned int calculeaza(int, int)’: user.cpp:24:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (a[x][y]!=-1) ^ user.cpp:30:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (a[x2][y2]!=-1) ^ user.cpp: In function ‘int main()’: user.cpp:44:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=1;i<=n;i++) ^ user.cpp:45:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=1;j<=n;j++) ^ user.cpp:53:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=2;i<=n-1;i++) ^