cpp/cs104/exceptions/divide

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A brute force approach to error checking is an <tt>assert</tt> statement. You must <tt>#include<cassert></tt>.

The <tt>assert</tt> statement acts like an if statement that will halt the program if the condition is <tt>false</tt> (i.e. the condition must be <tt>true</tt> for the program to continue).

The syntax is:

<pre>
assert(condition);
</pre>
Add an appropriate assert statement below to stop execution if the denominator is 0.

However, realize that using an assert is a pretty heavy-handed (drastic) approach. It is useful during debugging and integration of software components,
but probably not a great solution in software for release. We want to handle errors more gracefully.

Exceptions will help us
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Copied from problem cpp/cs104/exceptions/divide1 (author: redekopp@usc.edu)

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Choices
json list of string, bool pairs
e.g. [["good", true], ["bad", false]]

Correct answer
Template / Reference solution

Template / Reference solution

#include <iostream>
#include <cassert>
#include <stdexcept>
using namespace std;
int divide(int num, int denom)
{
\[
REDACTED
]\
return(num/denom);
}
int f1(int x)
{
return divide(x, x-2);
}

int main()
{
int res = -1, a;
cout << "Enter: " << endl;
cin >> a;
res = f1(a);
cout << res << endl;
return 0;
}

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 [{}]

[{"stdin":"4"}, {"stdin":"2"} ]
C++ test suite
See manual

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Property	Value
Description html markup shown to student	A brute force approach to error checking is an <tt>assert</tt> statement. You must <tt>#include<cassert></tt>. <p> The <tt>assert</tt> statement acts like an if statement that will halt the program if the condition is <tt>false</tt> (i.e. the condition must be <tt>true</tt> for the program to continue). <p> The syntax is: <p> <pre> assert(condition); </pre> Add an appropriate assert statement below to stop execution if the denominator is 0. <p> However, realize that using an assert is a pretty heavy-handed (drastic) approach. It is useful during debugging and integration of software components, but probably not a great solution in software for release. We want to handle errors more gracefully. <p> <strong>Exceptions will help us</strong>
Epilogue html markup shown when solved	remove
Public permissions	remove
Remarks Comments, history, license, etc.	Copied from problem cpp/cs104/exceptions/divide1 (author: redekopp@usc.edu) remove
Engine
Choices json list of string, bool pairs e.g. `[["good", true], ["bad", false]]`
Correct answer
Template / Reference solution
Template / Reference solution	#include <iostream> #include <cassert> #include <stdexcept> using namespace std; int divide(int num, int denom) { \[ REDACTED ]\ return(num/denom); } int f1(int x) { return divide(x, x-2); } int main() { int res = -1, a; cout << "Enter: " << endl; cin >> a; res = f1(a); cout << res << endl; return 0; }
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 `[{}]`	[{"stdin":"4"}, {"stdin":"2"} ]
C++ test suite See manual
Forbidden substrings json list of strings e.g. `["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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