
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
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- You get wrong answer. You already answer me three times the same wrong answer. 1. Write a program to simplify a Boolean expression. The user will enter from the keyboard a string representing a valid Boolean expression with spaces between the letters. The operators used will be OR(+), AND (*) and NOT (~), and the only valid Input characters will be A, B, +, *, ~, ( , ), 1 and 0. The expression will contain at most 3 operands, 3 operators and one set of parentheses. Output to the screen a line printing the simplified equivalent of the given expression. Simplify means outputting the fewest operators with no parentheses. Use the following list of Boolean Identities to simplify: Refer to the sample output below. Sample Runs (2):Enter a string: ~(A + B)Simplified expression: ~A * ~BEnter a string: ~A * A + 1arrow_forwardIn C++ Write a program whose input is a character and a string, and whose output indicates the number of times the character appears in the string. The output should include the input character and use the plural form, n's, if the number of times the characters appears is not exactly 1. Ex: If the input is: n Monday the output is: 1 n Ex: If the input is: z Today is Monday the output is: 0 z's Ex: If the input is: n It's a sunny day the output is: 2 n's Case matters. n is different than N. Ex: If the input is: n Nobody the output is: 0 n's The program must define and call the following function that takes the input string and character as parameters, and returns the number of times the input character appears in the input string.int CalcNumCharacters(string userString, char userChar)arrow_forwardC++ Read in a 2-character string from input into variable userCode. Declare a boolean variable containsLowercase and set containsLowercase to true if userCode contains a lowercase letter. Otherwise, set containsLowercase to false. Note: the tests will b Ex: If the input is z$, then containsLowercase is assigned with true, so the output is: Valid passcode Ex: If the input is CY, then containsLowercase is assigned with false, so the output is: Invalid passcode Note: Use getline(cin, userCode) to read the entire line from input into userCode.arrow_forward
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