cpp/cs102/practice5/messageDecoder Source

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Description
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You are a spy infiltrating an enemy territory. To communicate with your country hundreds of miles away you use a message system able to send 4 numbers at a time. 
Because you don’t want your enemies intercepting the message, there is a special decoding protocol used to decipher these messages and turn these numbers into characters.
 
First Letter = Take the first number (integer) and convert directly to ASCII equivalent.
Second letter = Take the second number (the double); use only the digits before the decimal and convert to ASCII equivalent.
Third letter = Take the second number again (the double); use only the 2 digits after the decimal and convert to ASCII eqivalent.
Fourth letter = Take the third and fourth numbers (integers); add them together and convert to ASCII equivalent.
 
Write a program able to take these 4 numbers and turn them into the intended message.

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Copied from problem cpp/cs102/practice5/computingPie (author: jmell@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 <cmath>
using namespace std;

int main()
{
int i1, i3, i4;
double i2;
cin >> i1 >> i2 >> i3 >> i4;

char c1 = \[ REDACTED ]\
char c2 = \[ REDACTED ]\
char c3 = \[ REDACTED ]\
char c4 = \[ REDACTED ]\

cout <<"Message: "
<< c1 << c2 << c3 << c4 <<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":"72 69.76 20 60", "args":[]},
{"stdin":"85 83.67 11 22", "args":[]},
{"stdin":"67 83.67385 70 3", "args":[]}
]
C++ test suite
See manual

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Property	Value
Description html markup shown to student	<p>You are a spy infiltrating an enemy territory. To communicate with your country hundreds of miles away you use a message system able to send 4 numbers at a time. </p> <p>Because you don’t want your enemies intercepting the message, there is a special decoding protocol used to decipher these messages and turn these numbers into characters.</p> <br> <p>First Letter = Take the first number (integer) and convert directly to ASCII equivalent.</p> <p>Second letter = Take the second number (the double); use only the digits <strong>before</strong> the decimal and convert to ASCII equivalent.</p> <p>Third letter = Take the second number again (the double); use only the 2 digits <strong>after</strong> the decimal and convert to ASCII eqivalent.</p> <p>Fourth letter = Take the third and fourth numbers (integers); add them together and convert to ASCII equivalent.</p> <br> <p>Write a program able to take these 4 numbers and turn them into the intended message.</p>
Epilogue html markup shown when solved	remove
Public permissions	remove
Remarks Comments, history, license, etc.	Copied from problem cpp/cs102/practice5/computingPie (author: jmell@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 <cmath> using namespace std; int main() { int i1, i3, i4; double i2; cin >> i1 >> i2 >> i3 >> i4; char c1 = \[ REDACTED ]\ char c2 = \[ REDACTED ]\ char c3 = \[ REDACTED ]\ char c4 = \[ REDACTED ]\ cout <<"Message: " << c1 << c2 << c3 << c4 <<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":"72 69.76 20 60", "args":[]}, {"stdin":"85 83.67 11 22", "args":[]}, {"stdin":"67 83.67385 70 3", "args":[]} ]
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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