#include #include using namespace std; class customer{ public: void add(){ int m, n, i; cout<<"Please input the account number:"<>n; for(i = 0; code[i+1] != 0; i++) { if(n == code[i]){ cout<<"The account has existed!"<>m; cout<<"Success!"<>n; for(i = 0; code[i] != 0; i++) { if(n == code[i]){ cout<<"The account has been deleted!"<