Databases
StackOverflow2013
Postsdbo
POSelection sort with arrays of structs
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POSelection sort with arrays of structs
    primarykey
    data
    text
    <p>I am having problem with selection sort, I am trying to sort the students name alphabetically.I compile it and it shows me whole bunch of errors in VS.</p> <p>I dont think it has do to do with my display all students function, I think it has more to do with SortByName and SortByScoreFunctions</p> <p>any help is appreciated thank you!</p> <p>here is the struct for my program.</p> <pre><code>struct StudentType { string studentName; int testScore; char grade; }; void SortStudentsByName(StudentType student[], int numStudents) { int startScan, minIndex, FirstInAlphabet; for (startScan = 0; startScan &lt; (NUM_STUDENTS-1); startScan++) { minIndex = startScan; FirstInAlphabet = student[0]; for( int index = startScan+1; index &lt; NUM_STUDENTS; index++) { if ( student[index] &gt; FirstInAlphabet) { FirstInAlphabet = student[index]; minIndex = index; } } } } void SortStudentsByScore(StudentType student[], int numStudents) { int startScan, minIndex, lowest; for (startScan = 0; startScan &lt; (NUM_STUDENTS-1); startScan++) { minIndex = startScan; lowest = student[0].testScore; for ( int index = startScan+1; index &lt; NUM_STUDENTS; index++) { if( student[index].testScore &lt; lowest) { lowest = student[index].testScore; minIndex = index; } } student[minIndex].testScore = student[startScan].testScore; student[startScan].testScore = lowest; cout &lt;&lt;"List of Students sorted by Score from Highest to Lowest" &lt;&lt; endl; DisplayAllStudents(student, numStudents); } } void DisplayAllStudents(const StudentType student[], int numStudents) { cout &lt;&lt; endl; FormatNameScoreGrade(cout); for(int i = 0; i &lt; numStudents; i++) { cout &lt;&lt; setw(20) &lt;&lt; student[i].studentName &lt;&lt; setw(10) &lt;&lt; student[i].testScore &lt;&lt; setw(10) &lt;&lt; student[i].grade &lt;&lt; endl; } cout &lt;&lt; endl; EndOfList(cout); } </code></pre> <p>when I compile here is the output I receive</p> <p>these are my output results for the Sort by Name</p> <pre><code>Fibonacci, Leonardo 63 D Huffman, David 79 C Augusta, Ada 91 A Goldbach, Christian 81 B Venn, John 100 A Church, Alonzo 72 C Fermat, Pierre 84 B Kruskal, Joseph 66 D Cantor, Georg 67 D Turing, Alan 85 B Chebysheva, PL 100 A DeMorgan, Augustus 79 C Karnaugh, Maurice 72 C Babbage, Charles 98 A Hooper, Grace 95 A </code></pre> <p>its not working here</p> <p>and this is the output for my sort by highest grade</p> <pre><code>Student Name Test Score Grade ------------------------------------------ -858993460 D Huffman, David-858993460 C Augusta, Ada-858993460 A Goldbach, Christian-858993460 B Venn, John-858993460 A Church, Alonzo-858993460 C Fermat, Pierre-858993460 B Kruskal, Joseph-858993460 D Cantor, Georg-858993460 D Turing, Alan-858993460 B Chebysheva, PL-858993460 A DeMorgan, Augustus-858993460 C Karnaugh, Maurice-858993460 C Babbage, Charles-858993460 A Hooper, Grace-858993460 A </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USJose Meza
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. COSort the errors and show us the first errors.
      singulars
      1. POSelection sort with arrays of structs
      1. USYochai Timmer
    2. CONeither 'sort' appears to swap the entries at all. The sort by score seems to move scores around, but not the names or the grades.
      singulars
      1. POSelection sort with arrays of structs
      1. USJonathan Leffler
    3. COWhat, if anything, have you done to debug your suspect `SortStudentsByX` functions *besides* posting it here?
      singulars
      1. POSelection sort with arrays of structs
      1. USWhozCraig
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload