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describing the price range and the dollar sign

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Jidong Xiao
2024-02-08 02:58:05 -05:00
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hws/04_yelp_businesses/README.md
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@@ -73,6 +73,16 @@ This message should be printed into the output file. For your reference, this is
![alt text](images/yelp_no_results.jpg "Yelp no results found")
### The Price Range
In Yelp, the "$" sign is commonly used to indicate the price range for businesses. It helps users quickly gauge the approximate cost of dining or using services at a particular establishment. There are four levels, represented by "$", "$$", "$$$", and "$$$$" respectively. A single "$" indicates that the business is relatively inexpensive, with prices typically ranging from low to moderate. A "$$$$" sign represents the highest price range level, indicating that the business is quite expensive.
In the input json file, the *RestaurantsPriceRange2* field is used to for this purpose. The value of this field ranges from 1 to 4. With 1 being the least expensive and 4 being the most expensive. Therefore, for a business whose *RestaurantsPriceRange2* is 1, your program should print a "$" sign; for a business whose *RestaurantsPriceRange2* is 2, your program should print a "$$" sign; etc.
In the case where the *RestaurantsPriceRange2* field does not exist, your program should not print any "$" sign; for your reference, the following is an example from Yelp in which no "$" sign is displayed.
![alt text](images/yelp_no_price.jpg "Yelp no price")
## Provided Code
Several helper functions are provided for you to parse the json file. All of them expect the caller to provide the one line from the json file as the sole argument, in the format of an std::string.