tailieunhanh - matlab primer 7th edition phần 3

mà có thể được sử dụng từ MATLAB hoặc từ một ứng dụng C độc lập, mà không có MATLAB. Trong ví dụ trong phần tiếp theo, các vĩ mô INDEX giúp với bản dịch này. Chỉ số của mảng cũng xuất hiện khác nhau. MATLAB được viết bằng C, và nó lưu trữ tất cả của mảng nội bộ bằng cách sử dụng số không dựa trên lập chỉ mục. | continue statement. Here is an example for both. It prints the odd integers from 1 to 7 by skipping over the even iterations and then terminates the loop when i is 7. for i _ 1 10 if mod i 2 0 continue end i _ if i 7 break end end The if statement The general form of a simple if statement is if expression statements end The statements will be executed only if the expression is true. Multiple conditions also possible for n -2 5 if n 0 parity 0 else if rem n 2 0 parity 2 else parity 1 end disp n parity end The else and elseif are optional. If the else part is used it must come last. 32 The switch statement The switch statement is just like the if statement. If you have one expression that you want to compare against several others then a switch statement can be more concise than the corresponding if statement. See help switch for more information. The try catch statement Matrix computations can fail because of characteristics of the matrices that are hard to determine before doing the computation. If the failure is severe your script or function see Chapter 7 may be terminated. The try catch statement allows you to compute optimistically and then recover if those computations fail. The general form is try J statements catch statements end The first block of statements is executed. If an error occurs those statements are terminated and the second block of statements is executed. You cannot do this with an if statement. See doc try. See Section for an example of try and catch. Matrix expressions if and while A matrix expression is interpreted by if and while to be true if every entry of the matrix expression is nonzero. Enter these two matrices A 1 2 3 4 B 2 3 3 5 33 If you wish to execute a statement when matrices A and B are equal you could type if A B disp A and B are equal end If you wish to execute a statement when A and B are not equal you would type if any any A B diSp A and B are not equal end or more simply if A B else disp A and B are not