Eroare de compilare: user.cpp: In function ‘void cool(int)’: user.cpp:35:25: error: ‘sol’ was not declared in this scope if (i==0 && sol[k-1]==1) { sol[k]=i; cool(k+1); } ^ user.cpp:36:26: error: ‘sol’ was not declared in this scope if (i==1 && (sol[k-1]==0||sol[k-1]==2)) { sol[k]=i; cool(k+1); } ^ user.cpp:37:26: error: ‘sol’ was not declared in this scope if (i==2 && (sol[k-1]==1||sol[k-1]==3)) { sol[k]=i; cool(k+1); } ^ user.cpp:38:26: error: ‘sol’ was not declared in this scope if (i==3 && (sol[k-1]==2||sol[k-1]==4)) { sol[k]=i; cool(k+1); } ^ user.cpp:39:26: error: ‘sol’ was not declared in this scope if (i==4 && (sol[k-1]==3)) { sol[k]=i; cool(k+1); } ^