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Switch (menuItem) { case kOpenMenuItem: // Code to open a file break; case kSaveMenuItem: // Code to save a file break; default: // Code to give an error message break; } If you omit the break statement, the code for the subsequent case will be executed whether or not it matches. This is sometimes useful, but more frequently a source of bugs. The Ternary Operator C++ has one operator that takes three arguments, known as the ternary operator. ” The ternary operator is represented by a ? and a :.

Others have discovered over the years that the C++ string doesn’t provide the behavior they need and have developed their own string type. Perhaps the most common reason is that development frameworks and operating systems tend to have their own way of representing strings, such as the CString class in Microsoft’s MFC. Often, this is for backward compatibility or legacy issues. When starting a project in C++, it is very important to decide ahead of time how your group will represent strings. References The pattern for most functions is that they take in zero or more parameters, do some calculations, and return a single result.

The following code shows the syntax for allocating a two-dimensional array of characters for a Tic-Tac-Toe board and then putting an “o” in the center square. char ticTacToeBoard[3][3]; ticTacToeBoard[1][1] = ‘o’; Figure 1-1 shows a visual representation of this board with the position of each square. TicTacToeBoard[0][0] TicTacToeBoard[0][1] TicTacToeBoard[0][2] TicTacToeBoard[1][0] TicTacToeBoard[1][1] TicTacToeBoard[1][2] TicTacToeBoard[2][0] TicTacToeBoard[2][1] TicTacToeBoard[2][2] FIGURE 1-1 In C++, the first element of an array is always at position 0, not position 1!

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