Eroare de compilare: user.cpp: In function ‘void bordare(int, int)’: user.cpp:14:9: error: ‘a’ was not declared in this scope a[0][i]=-1; ^ user.cpp:16:9: error: ‘a’ was not declared in this scope a[i][0]=-1; ^ user.cpp:18:9: error: ‘a’ was not declared in this scope a[m+1][i]=-1; ^ user.cpp:20:9: error: ‘a’ was not declared in this scope a[i][n+1]=-1; ^ user.cpp: In function ‘int main()’: user.cpp:30:18: warning: unused variable ‘k’ [-Wunused-variable] int n, x, y, k, s, prim, ultim; ^