cpp/cs104/exceptions/divide_throw_same

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It is better to throw specific types for each exception case you check for since two cases throwing the same type will be hard to distinguish by the caller?

Add code such that when the denominator is 0 an exception is thrown and caught in main and then prints <tt>Denom is 0</tt>.
<p>
Also, add code such that when the numerator is 0 an exception is thrown and caught in main and then prints <tt>Num is 0</tt>.
<p>
How could you change the code so that each exception was caught in its own <tt>catch<tt> block?
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Copied from problem cpp/cs104/exceptions/divide_std_except (author: redekopp@usc.edu)
Copied from problem cpp/cs104/exceptions/divide_throw_catch_main (author: redekopp@usc.edu)
Copied from problem cpp/cs104/exceptions/divide_throw_catch_primitive (author: redekopp@usc.edu)
Copied from problem cpp/cs104/exceptions/divide_throw_only (author: redekopp@usc.edu)
Copied from problem cpp/cs104/exceptions/divide_assert (author: redekopp@usc.edu)
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 <string>
#include <stdexcept>
using namespace std;

struct Num0Error {};
struct Denom0Error {};

int divide(int num, int denom)
{
if(denom == 0){
\[
REDACTED
\show:
throw 0;
]\
}
else if(num == 0){
\[
REDACTED
\show:
throw 1;
]\
}
cout << "Normal case" << endl;
return(num/denom);
}

int main()
{
int res = -1, n, d;
cout << "Enter num & denom: " << endl;
cin >> n >> d;
// Add code to try and catch exception cases
// and if an exception is caught, try to get another
// input from the user until they enter a value that
// does not generate an exception.
\[
REDACTED
\show:
try {
res = divide(n, d);
// I'll only get here if no exception occurred
}
catch(int val){
// Why did we fail? We'd have to look at the thrown value
// and somehow interpret it to find the root cause if we
// wanted to fix it.
cout << val << endl;
}
]\
cout << res << endl;
return 0;
}

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

[{"stdin":"0 4"}, {"stdin":"4 0"}, {"stdin":"4 2"} ]
C++ test suite
See manual

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Property	Value
Description html markup shown to student	It is better to throw specific types for each exception case you check for since two cases throwing the same type will be hard to distinguish by the caller? Add code such that when the denominator is 0 an exception is thrown and caught in main and then prints <tt>Denom is 0</tt>. <p> Also, add code such that when the numerator is 0 an exception is thrown and caught in main and then prints <tt>Num is 0</tt>. <p> How could you change the code so that each exception was caught in its own <tt>catch<tt> block?
Epilogue html markup shown when solved	remove
Public permissions	remove
Remarks Comments, history, license, etc.	Copied from problem cpp/cs104/exceptions/divide_std_except (author: redekopp@usc.edu) Copied from problem cpp/cs104/exceptions/divide_throw_catch_main (author: redekopp@usc.edu) Copied from problem cpp/cs104/exceptions/divide_throw_catch_primitive (author: redekopp@usc.edu) Copied from problem cpp/cs104/exceptions/divide_throw_only (author: redekopp@usc.edu) Copied from problem cpp/cs104/exceptions/divide_assert (author: redekopp@usc.edu) 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 <string> #include <stdexcept> using namespace std; struct Num0Error {}; struct Denom0Error {}; int divide(int num, int denom) { if(denom == 0){ \[ REDACTED \show: throw 0; ]\ } else if(num == 0){ \[ REDACTED \show: throw 1; ]\ } cout << "Normal case" << endl; return(num/denom); } int main() { int res = -1, n, d; cout << "Enter num & denom: " << endl; cin >> n >> d; // Add code to try and catch exception cases // and if an exception is caught, try to get another // input from the user until they enter a value that // does not generate an exception. \[ REDACTED \show: try { res = divide(n, d); // I'll only get here if no exception occurred } catch(int val){ // Why did we fail? We'd have to look at the thrown value // and somehow interpret it to find the root cause if we // wanted to fix it. cout << val << endl; } ]\ 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":"0 4"}, {"stdin":"4 0"}, {"stdin":"4 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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