1 / 16

Two-Dimensional Arrays Lesson xx

Two-Dimensional Arrays Lesson xx. Objective. We will cover the following topics that deal with two-dimensional array: Declaration Subscripts Initialization Operations Application in a program. Two Dimensional Array Declaration. int m [3] [4];. col 1. col 2. col 3. col 0.

iram
Télécharger la présentation

Two-Dimensional Arrays Lesson xx

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. Two-Dimensional Arrays Lesson xx

  2. Objective • We will cover the following topics that deal with two-dimensional array: • Declaration • Subscripts • Initialization • Operations • Application in a program

  3. Two Dimensional Array Declaration int m [3] [4]; col 1 col 2 col 3 col 0 row 0 row 1 row 2

  4. More Examples of 2-D Arrays float taxTable [10] [15]; double d [50][50]; char nameList [100] [20]; int t [5] [6];

  5. Subscripts int m [3] [4]; col 1 col 2 col 3 col 0 row 0 m [1] [3] row 1 row 2 m [2] [1]

  6. Initialization with { } int m[2][3] = {{3, 6, 7}, {4, 7, 5}}; 4 3 6 7 5 7

  7. Initializing Partial Rows int m[2][3] = {{3, 6 }, {4} }; 4 3 0 3 6 6 0 0 4 0 0 0 int m[2][3] = { 3, 6 , 4 };

  8. Two-Dimensional Array Operations int m[4][5] = {0}; int x = 0; int a = 1;   m[2][3] = 17;   m[3][3] = a + m[2][3];   if (m[1][2] >= x) cin >> m[1][3]; cout << m[1][0] << endl;

  9. Two-Dimensional Array Operations int m[4][5] = {0}; int x = 0; int a = 1; m[2][3] = 17;   m[3][3] = a + m[2][3];   if (m[1][2] >= x) cin >> m[1][3]; cout << m[1][0] << endl;

  10. Program Description Write a program for a shipping company that: 1. Reads in an origination and destination zone. 2. Reads in the weight of the package. 3. Looks up the price/lb for shipping the package. 4. Computes the cost for shipping the package.

  11. Table .50 1.00 1.25 2.00 1.00 .50 .82 .44 .82 .50 1.2 5 .89 .50 .69 .47 2.00 1 2 3 4 Zone 1 2 3 4

  12. Program Listing #include <iostream> using std::cin; using std::cout; using std::endl; int main() {   double chart[4][4] = {{0.5, 1.0, 1.25, 2.0},    {1.0, 0.5, 0.89, 0.47},     {1.25, 0.82, 0.5, 0.69},     {2.0, 0.44, 0.82, 0.5}}; int o, d; float w; cout << "Enter origination zone, destination zone & weight: "; cin >> o >> d>> w; cout << "The cost for sending your package is "     <<( chart[o-1][d-1 ] ) * w << endl;   return 0; }

  13. Table int main() {   double chart[4][4] = {{0.5, 1.0, 1.25, 2.0},    {1.0, 0.5, 0.89, 0.47},     {1.25, 0.82, 0.5, 0.69},     {2.0, 0.44, 0.82, 0.5}}; 1.25 1.00 2.00 .50 .50 .44 1.00 .82 .89 .50 1.2 5 .82 .69 .47 2.00 .50 chart 0 1 2 3 0 1 2 3

  14. Declaration and Input int o, d; float w; cout << "Enter origination zone, destination zone & weight: "; cin >> o >> d>> w;

  15. Compute Cost cout << "The cost for sending your package is " <<( chart[o-1][d-1 ] ) * w << endl;   return 0; }

  16. Summary In this module, we learned the following about two-dimensional arrays: • Declaration • Subscripts • Initialization • Operations • Application in a program

More Related