1 / 8

Arrays of Structs

Arrays of Structs. Introduction. A common way to hold data is in an array. A common way to represent data is with a struct. Many times you will need to put them both together. Accessing the array of structs is fairly easy, once you get used to it. Example. struct Record { string ID;

toni
Télécharger la présentation

Arrays of Structs

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Arrays of Structs

  2. Introduction • A common way to hold data is in an array. • A common way to represent data is with a struct. • Many times you will need to put them both together. • Accessing the array of structs is fairly easy, once you get used to it.

  3. Example struct Record { string ID; int Value; string Description; };

  4. Record MyArray[10];//declares an array of //10 structs of type Record //set up a blank record for initialization Record Blank; Blank.ID = “”; Blank.Value = 0; Blank.Description = “”; //initialize the array to blank for ( int i =0; i < 10; i++ ) MyArray[i] = Blank;

  5. //read in a some values that need to be //stored in >> ID >> Value >> Description; //Store them in an array location MyArray[0].ID = ID; MyArray[0].Value = Value; MyArray[0].Description = Description; //You can fill the entire array this way, like in a loop or //something. //Now you can do things like sort or print //them

  6. Sorting void Sort ( Record Array[], int size ) { Record TempRecord; int smallest; for ( int i=0; i < size-1; i++ ) { smallest = i; for ( int j = i+1; j < size; j++ )

  7. { if ( Array[smallest].ID > Array[j].ID ) smallest = j; } TempRecord = Array[i]; Array[i] = Array[smallest]; Array[smallest] = TempRecord; } }

  8. Printing void Print(Record Array[], int size, ofstream& out) { for ( int i=0; i<size; i++ ) out << setw(15) << Array[i].ID <<setw(15) << Array[i].Value << setw(40) << Array[i].Description << endl; }

More Related