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December 10th, 2013, 02:16 AM
#1
bubble sort is making up its own number
i cant figure out what im doing wrong with my bubble sort. when i cout the sorted test scores, the first number(testScore[0]) is always wrong after the sort, thank you for the help.this is the code.
#include <iostream>
using namespace std;
int main()
{
int i;
int j;
int testScore[5];
int count;
for (count = 0; count < 5; count++)
{
cout<< "Enter the 5 test scores "
<< (count + 1 ) << ":";
cin >> testScore[count];
}
cout << "the test scores you entered are:" << endl;
for (count = 0; count < 5; count++)
{
cout<< " " << testScore[count];
cout << endl;
}
for(i = 0; i<= 4; i++)
{
for (j = i+1; j<= 5; j++)
{
int hold = 0;
if(testScore[i] > testScore[j])
{
hold = testScore[i];
testScore[i] = testScore[j];
testScore[j] = hold;
}
}
}
cout << "The test scores from lowest to highest are:" << endl;
for (count = 0; count < 5; count++)
{
cout<< " " << testScore[count];
cout << endl;
}
system ("pause");
0}
Last edited by dthunderchunky; December 10th, 2013 at 02:19 AM.
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December 10th, 2013, 03:56 AM
#2
Re: bubble sort is making up its own number
It is because you are reading an element which is after the last element of your array, and therefore undefined.
Programming isn't magic, and if you learn to use a debugger you won't have to ask questions like this.
Nobody cares how it works as long as it works
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December 10th, 2013, 04:50 AM
#3
Re: bubble sort is making up its own number
You should also use code tags when posting code and not quote tags. Go advanced, select the code and click '#'.
All advice is offered in good faith only. All my code is tested (unless stated explicitly otherwise) with the latest version of Microsoft Visual Studio (using the supported features of the latest standard) and is offered as examples only - not as production quality. I cannot offer advice regarding any other c/c++ compiler/IDE or incompatibilities with VS. You are ultimately responsible for the effects of your programs and the integrity of the machines they run on. Anything I post, code snippets, advice, etc is licensed as Public Domain https://creativecommons.org/publicdomain/zero/1.0/ and can be used without reference or acknowledgement. Also note that I only provide advice and guidance via the forums - and not via private messages!
C++23 Compiler: Microsoft VS2022 (17.6.5)
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