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Sum of First N Numbers (input)

Read a single integer n from standard input, then use a loop to add up the numbers from 1 to n. Print the result in the exact format shown in Expected Output.

For the input 5, the sum 1+2+3+4+5 is 15, so the program prints Sum: 15.

Expected Output:

Sum: 15

= newline. The output ends with a newline — print one after the last line.

Hints3 available
Topics:
Loops
📥 Auto-Input:
5\n
This input is automatically fed to your program's stdin
1
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Your Output

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Test Cases

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