01.0.booleanexpressions

01.0.booleanexpressions - Flow of Control The order in...

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CSE 201 – Elementary Computer Programming 1 Boolean Expressions CSE 201 – Elementary Computer Programming 2 Flow of Control ± The order in which statements in a program are executed is called the flow of control ± So far we have only seen sequential execution: statements execute one after the other in the order in which they appear in the program CSE 201 – Elementary Computer Programming 3 Flow of Control cont. ± Consider the following tasks: ± You want to compute the quotient of two variables but only if the divisor is not zero ± You input some value (e.g., a date) and if it is in the correct format (mm/dd/yyyy) you continue the computation, otherwise you print an error ± Given a grade between 0 and 100, you want to convert the numeric value to a letter grade (e.g., A for grade greater than 90, B for grade between 80 and 90, etc.) ± How can we check these conditions and execute the appropriate piece of code depending on the outcome of the check? CSE 201 – Elementary Computer Programming 4 Divide by Zero Scanner in = new Scanner(System.in); System.out.print(“Enter the dividend: ”); int dividend = in.nextInt(); System.out.print(“Enter the (non-zero) divisor: ”); int divisor = in.nextInt(); if (divisor != 0) { int
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01.0.booleanexpressions - Flow of Control The order in...

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