The best known multiple letter encryption cipher is the __________ , which treats digrams in the plaintext as single units and translates these units into ciphertext digrams.

Given the following code, what namespace does display3 belong to?

{ void print(); void display1(){}; } namespace ns2 { void print(); void display2(){}; } void display3(); int main() { using namespace ns1; using namespace ns2; display1(); display2(); return 0; } void display3() { }

To convert a char variable to a string, call its ____________ method.

a. Compare To b. To String c. Equals d. Get Type