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CMPT 127 Lecture Notes - Lecture 15: Software Engineering

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14 Sep 2017

School

Simon Fraser University

Department

Computing Science

Course

Professor

Richard Vaughan

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Document Summary

Reading the first 8 lines of code top-to-bottom, left-to-right, we see: line 1: a comment describing what the following function does. In the body of the function, the keyword return evaluates the expression to it"s right which becomes the function"s return value, then exits the function: the body of the function ends at the closing }. Having been defined in lines 2 to 8, function max() is called on line 15. The values of integers a and b are assigned to x and y inside max(), the function does its work, and the return value is passed as the second argument to printf(). The syntax for c functions is type functionname( type arg_name1 [, type arg_name2, ] ) // code-block function body enclosed by curly braces. Note that main() itself is a normal function. The system calls it to start the program. The name function is a little unfortunate, since these are not the same as mathematical functions.

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Related Questions

1.Create a list that contains 10 successive integers starting with the value in the variable start. For example, if start is 7, the resulting list should be [7, 8, 9, 10, 11, 12, 13, 14, 15, 16]. Store the list in a variable named my_list. Assume that the value of start has already been set.

2.Create a list that is made up of the first half of the elements of a list called original_list. Store the new list in a variable called half_list. Assume that the original list has already been initialized and contains an even number of elements.

3. Write a predicate function called same_ends that accepts a list of integers and an integer (n) as arguments. Return True if the first n numbers in the list are the same as the last n numbers in the list, and False otherwise. For example, if the list was [1, 2, 3, 4, 99, 1, 2, 3, 4], the function would return True if n is 4 and False if n is 3. Assume that n is between 1 and the length of the list, inclusive.

4.Write a function called highest_values that accepts as arguments a list of numeric values and a single integer (n). The function should return a list made up of the largest n values from the argument list in order from lowest to highest. For example, if the argument list is [46, 82, 25, 61, 70, 33, 54] and n is 3, the return value should be [61, 70, 82]. Assume that the argument list contains at least n elements.

5.Assume that a list of integers stored in a variable named original contains exactly two elements that are zero. Write code that creates a separate list that contains the elements from original that are between the two zeros. Do not include the zeros in the new list. Store the list in a variable named between_zeros.

6. Write a function called price_range that accepts a list of floating-point numbers representing prices as an argument and returns the the difference between the highest price and the lowest price. Do NOT use the built-in functions max or min in your solution. Assume that all prices are positive values and that none of them exceed 10,000.00.

7. Write a function called count_vowels that accepts a string argument that represents a word and returns the number of vowels that are in the word. The vowels are A, E, I, O, and U (ignore the 'sometimes Y' rule). Count both uppercase and lowercase vowels.

Assume that the variable table holds a two-dimensional list of integers. Write code that computes the sum of all elements in the table, assigning the result to the variable table_sum.

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