The body consists of all of the statements below the header with the same If the condition is true, execute each of the STATEMENTS in the body and If the condition is false, exit the while statement and continue The flow of execution for a while statement works like this:Įvaluate the condition ( BOOLEAN EXPRESSION), yielding False or The name was", name + "." ) else : print ( " \n Great, you got it in", pos + 1, "guesses!" ) ", end = '' ) guess = input ( "Guess again: " ) pos = pos + 1 if pos = len ( name ) and name != guess : print ( "Too bad, you couldn't get it. Try to guess it: " ) pos = 0 while guess != name and pos < len ( name ): print ( "Nope, that's not it! Hint: letter ", end = '' ) print ( pos + 1, "is", name + ". Name = 'Harrison' guess = input ( "So I'm thinking of person's name. The following program outputs a sequence of values in the left columnĪnd 2 raised to the power of that value in the right column: In the table the Intel Pentium processor chip used to perform floating-pointĪlthough a log table is not as useful as it once was, it still makes a goodĮxample. In some cases, there have been errors in the underlying tables, most famously For some operations, computers use tables of values to get anĪpproximate answer and then perform computations to improve the approximation. Soon thereafter,Ĭomputers and calculators were so pervasive that the tables became obsolete. Is great! We can use the computers to generate the tables, so there will be noĮrrors.” That turned out to be true (mostly) but shortsighted.
When computers appeared on the scene, one of the initial reactions was, “This
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The tables was slow and boring, and they tended to be full of errors. To make that easier, mathematicsīooks contained long tables listing the values of these functions. Were readily available, people had to calculate logarithms, sines and cosines,Īnd other mathematical functions by hand.
One of the things loops are good for is generating tables.
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