cpp/cs103/hw-recursion/sum

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Define a recursive function <tt>int sum_range(int low, int high)</tt>
that computes the sum
$$\textrm{low} + (\textrm{low}+1) + (\textrm{low}+2) + \dotsb + \textrm{high}$$
using recursion. You can assume $\textrm{low} \le \textrm{high}$.
<br>
E.g. <tt>sum_up_to(10, 12)</tt> is 10+11+12 which is 33.

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Correct answer
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Template / Reference solution

int sum_range(int low, int high) {
\[
REDACTED
]\
}
Java test suite
See manual

C++ test suite
json list of stdin/args tests
e.g. [{"stdin":"hi", "args":["4", "5"]}, {"stdin":"noargs"}]
to just run once with no input use [{}]

C++ test suite
See manual

[
["check-function", "sum_range", "int", ["int", "int"]],
["call-function", "sum_range", ["10", "12"]],
["call-function", "sum_range", ["1", "5"]],
["call-function", "sum_range", ["0", "10"]],
["call-function", "sum_range", ["-20", "20"]]
]
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e.g. ["DataStructure"]

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Property	Value
Description html markup shown to student	Define a recursive function <tt>int sum_range(int low, int high)</tt> that computes the sum $$\textrm{low} + (\textrm{low}+1) + (\textrm{low}+2) + \dotsb + \textrm{high}$$ using recursion. You can assume $\textrm{low} \le \textrm{high}$. <br> E.g. <tt>sum_up_to(10, 12)</tt> is 10+11+12 which is 33.
Epilogue html markup shown when solved	remove
Public permissions	remove
Remarks Comments, history, license, etc.	remove
Engine
Choices json list of string, bool pairs e.g. `[["good", true], ["bad", false]]`
Correct answer
Template / Reference solution
Template / Reference solution	int sum_range(int low, int high) { \[ REDACTED ]\ }
Java test suite See manual
C++ test suite json list of stdin/args tests e.g. `[{"stdin":"hi", "args":["4", "5"]}, {"stdin":"noargs"}]` to just run once with no input use `[{}]`
C++ test suite See manual	[ ["check-function", "sum_range", "int", ["int", "int"]], ["call-function", "sum_range", ["10", "12"]], ["call-function", "sum_range", ["1", "5"]], ["call-function", "sum_range", ["0", "10"]], ["call-function", "sum_range", ["-20", "20"]] ]
Forbidden substrings json list of strings e.g. `["for","while"]`	["#include", "for", "while", "*"] remove
Solution visibility	remove
Java imports json list of importables e.g. `["java.util.*"]`	remove
Override Java classname else defaults to websheet name	remove
Dependent on other websheets? json list of websheet names in this folder e.g. `["DataStructure"]`	remove
Is example? i.e., just a demo	remove
Add compiler flag(s) json list of flags e.g. `["-Wno-unused-variable"]`	remove
Remove default compiler flag(s) json list of flags see default_cppflags e.g. `["-Wno-write-strings"]`	remove

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