cpp/control/countodd Source

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Description
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This program reads in integers until the user enters a negative number.
For each positive number that is input, the program should check whether that
number is odd and, if so, increment a count of how many odd numbers
have been input. That total is output at the end of the program.

Epilogue
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shown when solved

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Remarks
Comments, history, license, etc.

Originally by Mark Redekopp (redekopp@usc.edu) and Dave Pritchard (daveagp@gmail.com)

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

Correct answer
Template / Reference solution

Template / Reference solution

#include <iostream>
using namespace std;

int main() {
int num_odds = 0;
int value = 0;

// You may declare any additional variables below or add any additional
// code before the loop starts.
\[

]\

// Then enter a condition in the while loop parentheses to continue
// receiving input until the user enters a negative number (i.e. -1).
// For each number input, check if it is odd and if so, increase
// 'num_odds' by 1.

while( \[ value >= 0 ]\ ) {
cout << "Enter a positive integer or -1 to quit:" << endl;
cin >> value;
\[
if( value >= 0 ){
if( (value%2) == 1){
num_odds++;
}
}
]\
}

cout << "You entered " << num_odds << " odd numbers" << 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": "0 100 48 47 55 3 -1"},
{"stdin": "-1"},
{"stdin": "1 3 5 7 -1"}
]

C++ test suite
See manual

Forbidden substrings
json list of strings
e.g. ["for","while"]

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Java imports
json list of importables
e.g. ["java.util.*"]

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Override Java classname
else defaults to
websheet name
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Dependent on other websheets?
json list of websheet names in this folder
e.g. ["DataStructure"]

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Is example?
i.e., just a demo
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Add compiler flag(s)
json list of flags
e.g. ["-Wno-unused-variable"]

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Remove default compiler flag(s)
json list of flags
see default_cppflags
e.g. ["-Wno-write-strings"]

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Property	Value
Description html markup shown to student	This program reads in integers until the user enters a negative number. For each positive number that is input, the program should check whether that number is odd and, if so, increment a count of how many odd numbers have been input. That total is output at the end of the program.
Epilogue html markup shown when solved	remove
Public permissions	remove
Remarks Comments, history, license, etc.	Originally by Mark Redekopp (redekopp@usc.edu) and Dave Pritchard (daveagp@gmail.com) 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> using namespace std; int main() { int num_odds = 0; int value = 0; // You may declare any additional variables below or add any additional // code before the loop starts. \[ ]\ // Then enter a condition in the while loop parentheses to continue // receiving input until the user enters a negative number (i.e. -1). // For each number input, check if it is odd and if so, increase // 'num_odds' by 1. while( \[ value >= 0 ]\ ) { cout << "Enter a positive integer or -1 to quit:" << endl; cin >> value; \[ if( value >= 0 ){ if( (value%2) == 1){ num_odds++; } } ]\ } cout << "You entered " << num_odds << " odd numbers" << 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": "0 100 48 47 55 3 -1"}, {"stdin": "-1"}, {"stdin": "1 3 5 7 -1"} ]
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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