Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Object-Oriented Programming

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4. (Check SSN) Write a program that prompts the user to enter a Social Security
number in the format DDD-DD-DDDD, where D is a digit. Your program should
check whether the input is valid. Here are sample runs:
Enter a SSN: 232-23-5435 -Enter
232-23-5435 is a valid social security number
Enter a SSN: 23-23-5435
Enter
23-23-5435 is an invalid social security number
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Transcribed Image Text:4. (Check SSN) Write a program that prompts the user to enter a Social Security number in the format DDD-DD-DDDD, where D is a digit. Your program should check whether the input is valid. Here are sample runs: Enter a SSN: 232-23-5435 -Enter 232-23-5435 is a valid social security number Enter a SSN: 23-23-5435 Enter 23-23-5435 is an invalid social security number
3. (Days of a month) Write a program that prompts the user to enter a year and
the first three letters of a month name (with the first letter in uppercase) and
displays the number of days in the month. Here is a sample run:
Enter a year: 2001 -Enter
Enter a month: Jan
Jan 2001 has 31 days
JEnter
Enter a year: 2016
JEnter
Enter a
onth: Feb JEnter
Jan 2016 has 29 days
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Transcribed Image Text:3. (Days of a month) Write a program that prompts the user to enter a year and the first three letters of a month name (with the first letter in uppercase) and displays the number of days in the month. Here is a sample run: Enter a year: 2001 -Enter Enter a month: Jan Jan 2001 has 31 days JEnter Enter a year: 2016 JEnter Enter a onth: Feb JEnter Jan 2016 has 29 days
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