![]() In this case, the catch statements check the error message that was issued (returned by lasterr) and respond appropriately. If a statement in the try segment of the block fails, control passes to the catch segment. The example below shows a try/ catch block within a function that multiplies two matrices. When you have statements in your code that could possibly generate unwanted results, put those statements into a try/ catch block that will catch any errors and handle them appropriately. In these examples, you get an error when choice equals 2, because x is undefined. The same holds true for if/ ifelse statements. Since MATLAB executes only one case of any switch statement, variables defined within one case are not known in the other cases of that switch statement. In this example, if result is 52, only the first disp statement executes, even though the second is also a valid match: Using break within a case statement is not only unnecessary, it is also invalid and generates a warning. In MATLAB, case statements do not fall through only one case may execute. In C, if you don't end each case with a break statement, code execution falls through to the following case. The first case below tests for either a linear or bilinear method by using a cell array in the case statement. You can test against more than one condition with switch. You need strcmp to compare strings of different lengthsĪ useful difference between switch/ case statements in MATLAB and C is that you can specify string values in MATLAB case statements, which you cannot do in C. It is possible, but usually not advantageous, to implement switch/ case statements using if/ elseif instead. Control passes to the caller of the function. Immediately exits the function in which it appears. Control passes to next iteration of the same loop. Skips any remaining statements in the current loop. In nested loops, control passes to the next outer loop. Make sure you use these functions appropriately.Įxits the loop in which it appears. It's easy to confuse the break, continue, and return functions as they are similar in some ways.
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