In-class notes for 09/21/2018

CS 251 (SD), Fall 2018

• HW6

Reading questions

Operators

• An operator is a function with specialized syntax for its calls.

• In C++ objects, each operator (e.g., +) has an alternate name (e.g., operator+ that can be used to call that operator using ordinary function-call syntax.

Arrays

• In an array, a single variable name identifies multiple memory locations of the same type

• Memory diagram for arrays

• C++ code:

     int arr[5];
     arr[3] = 27;
     cout << arr[3] << endl;
     
     int arr2[] = {1, 2, 3, 4};
     char s[] = "hello";
     cout << arr2[3] << s[1] << endl;
  

  

Puzzles

HW7

• Standard deviation formula:

• Accumulator variables for loops