C/C++ C++ Program Problem: Solutions & Tips

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The discussion centers on confusion regarding the pseudocode related to a problem description. The initial query highlights a lack of understanding of the code's structure, specifically why certain values, like "units - 500" and "units - 1000," are used. The response clarifies that these lines in the code are a direct translation of the problem description, with "every unit in excess of 1000" being represented as "units - 1000." The conversation emphasizes the importance of understanding how the code reflects the problem's requirements.
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I cannot Understand the marked lines
 
The lines in blue in your image pretty well explain what is happening in the pseudocode. Are you having trouble understanding the problem description?
 
No I understand the description. But I don't understand the form of writing the code . Why in the first line he wrote units -500 and why in the second line he wrote units - 1000
 
"every unit in excess of 1000" is (units - 1000)

So the code is a direct translation of the description above.
 
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