Compilare: user.cpp: In function ‘int main()’: user.cpp:27:28: warning: operation on ‘k’ may be undefined [-Wsequence-point] a[++k]=(b-1)*a[k-1]; ^ user.cpp:44:34: warning: operation on ‘k’ may be undefined [-Wsequence-point] c[++k]=(b-1)*c[k-1]+(b-1); ^ user.cpp:14:11: warning: unused variable ‘i’ [-Wunused-variable] int k,i; ^