Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
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Question
**Task:** Write a program in Perl programming language to find the sum of natural numbers from 1 to 50 and print the sum in the output. **Solution Explanation:** To solve this problem, you need to write a Perl script that calculates the sum of natural numbers starting from 1 up to 50. The natural numbers are a sequence of numbers starting from 1, 2, 3, and so on. The program's output will be the sum of these numbers, which involves simple arithmetic. The sum can be calculated using looping constructs or a mathematical formula for the sum of an arithmetic series. After achieving the sum, the program should then print out the result. Here is a sample code in Perl that demonstrates how this can be implemented: ```perl #!/usr/bin/perl use strict; use warnings; my $sum = 0; for my $number (1..50) { $sum += $number; } print "The sum of natural numbers from 1 to 50 is: $sum\n"; ``` **Explanation of the Code:** 1. **Header:** The script begins with `#!/usr/bin/perl`, which indicates that the program should be executed using the Perl interpreter. 2. **Use Statements:** `use strict;` and `use warnings;` are included to help catch errors and enforce good coding practices. 3. **Variable Initialization:** `$sum` is initialized to 0. This variable will hold the accumulated sum of numbers. 4. **Loop:** A `for` loop iterates over the numbers from 1 to 50, adding each number to `$sum`. 5. **Output:** Finally, the script prints out the total sum using `print`. This program is a simple yet clear way to calculate and display the sum of natural numbers from 1 to 50 using Perl.
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Transcribed Image Text:**Task:** Write a program in Perl programming language to find the sum of natural numbers from 1 to 50 and print the sum in the output. **Solution Explanation:** To solve this problem, you need to write a Perl script that calculates the sum of natural numbers starting from 1 up to 50. The natural numbers are a sequence of numbers starting from 1, 2, 3, and so on. The program's output will be the sum of these numbers, which involves simple arithmetic. The sum can be calculated using looping constructs or a mathematical formula for the sum of an arithmetic series. After achieving the sum, the program should then print out the result. Here is a sample code in Perl that demonstrates how this can be implemented: ```perl #!/usr/bin/perl use strict; use warnings; my $sum = 0; for my $number (1..50) { $sum += $number; } print "The sum of natural numbers from 1 to 50 is: $sum\n"; ``` **Explanation of the Code:** 1. **Header:** The script begins with `#!/usr/bin/perl`, which indicates that the program should be executed using the Perl interpreter. 2. **Use Statements:** `use strict;` and `use warnings;` are included to help catch errors and enforce good coding practices. 3. **Variable Initialization:** `$sum` is initialized to 0. This variable will hold the accumulated sum of numbers. 4. **Loop:** A `for` loop iterates over the numbers from 1 to 50, adding each number to `$sum`. 5. **Output:** Finally, the script prints out the total sum using `print`. This program is a simple yet clear way to calculate and display the sum of natural numbers from 1 to 50 using Perl.
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