CA 3 - Grid Generation
in CS 102 on C++, Assignments
An in-class activity assigned Monday, 04/15/2019. Due Wed, Apr. 17 in class or via submission portal
Write a C++ program that allows the user to select an option from the following menus and generates an appropriate grid:
----------------------------------
WELCOME TO GRID GENERATOR: MENU 1
----------------------------------
Select the format of your grid:
1. Create an n by n grid [square]
2. Create a x by y grid [rectangle]
3. Create a random grid size
----------------------------------
WELCOME TO GRID GENERATOR: MENU 2
----------------------------------
Select the design of your grid:
1. Points [.]
2. Stars [*]
3. Lines [|]
4. Boxes [_]
5. Custom [?]
In-Class Progress
#include <iostream>
using namespace std;
int getDimension(){
int dimension;
cout << "Enter a dimension: ";
cin >> dimension;
return dimension;
}
void printStars(int x, int y){
for (int row = 0; row < x; row++){
for (int col = 0; col < y; col++){
cout << "* ";
}
cout << endl;
}
}
int main() {
int format;
cout << "----------------------------------" << endl;
cout << " WELCOME TO GRID GENERATOR " << endl;
cout << "----------------------------------" << endl;
cout << "Select a format: " << endl;
cout << "1. Create an n by n grid [square]" << endl;
cout << "2. Create an x by y grid [rectangle]" << endl;
cout << "3. Create a random sized grid" << endl;
cin >> format;
int design;
cout << "Select a design: "<< endl;
cout << "1. Stars *" << endl;
cout << "2. Crosses + " << endl;
cout << "3. Custom ?" << endl;
cin >> design;
cout << "You have selected format #" << format << " and design #" << design << ". " << endl;
int length;
int width;
switch(format) {
case 1: // square grid
length = getDimension();
width = length;
break;
case 2:
length = getDimension();
width = getDimension();
break;
case 3:
srand(time(0));
length = rand() % 11 + 1; // # between 1 & 10
width = rand() % 11 + 1;
break;
}
switch (design){
case 1: // Stars
printStars(length, width);
break;
}
}
Sample Transcripts
Showing the generation of a rectangular grid (6 rows, 4 columns) made of ‘boxes’.
/*
----------------------------------
WELCOME TO GRID GENERATOR
----------------------------------
Select the format of your grid:
1. Create an n by n grid [square]
2. Create a x by y grid [rectangle]
3. Create a random grid size
2
----------------------------------
WELCOME TO GRID GENERATOR
----------------------------------
Select the design of your grid:
1. Points [.]
2. Stars [*]
3. Lines [|]
4. Boxes [_]
5. Custom [?]
4
Enter a dimension: 6
Enter a dimension: 4
----------------------------------
BOXES GRID (6 x 4)
----------------------------------
[__][__][__][__]
[__][__][__][__]
[__][__][__][__]
[__][__][__][__]
[__][__][__][__]
[__][__][__][__]
*/
Showing the generation of a square grid (10 rows, 10 columns) made of ‘points’.
/*
----------------------------------
WELCOME TO GRID GENERATOR
----------------------------------
Select the format of your grid:
1. Create an n by n grid [square]
2. Create a x by y grid [rectangle]
3. Create a random grid size
1
----------------------------------
WELCOME TO GRID GENERATOR
----------------------------------
Select the design of your grid:
1. Points [.]
2. Stars [*]
3. Lines [|]
4. Boxes [_]
5. Custom [?]
1
Enter a dimension: 10
----------------------------------
POINTS GRID (10 x 10)
----------------------------------
. . . . . . . . . .
. . . . . . . . . .
. . . . . . . . . .
. . . . . . . . . .
. . . . . . . . . .
. . . . . . . . . .
. . . . . . . . . .
. . . . . . . . . .
. . . . . . . . . .
. . . . . . . . . .
*/
Showing the generation of a grid of randomized dimensions, made using a custom symbol.
/*
----------------------------------
WELCOME TO GRID GENERATOR
----------------------------------
Select the format of your grid:
1. Create an n by n grid [square]
2. Create a x by y grid [rectangle]
3. Create a random grid size
3
----------------------------------
WELCOME TO GRID GENERATOR
----------------------------------
Select the design of your grid:
1. Points [.]
2. Stars [*]
3. Lines [|]
4. Boxes [_]
5. Custom [?]
5
----------------------------------
CUSTOM GRID (5 x 8)
----------------------------------
Enter a symbol to denote a cell: R
R R R R R R R R
R R R R R R R R
R R R R R R R R
R R R R R R R R
R R R R R R R R
*/
Things to Consider
- Your program should follow the “pretty code” guidelines
- How can you test that your program will work for most (or perhaps all) cases?
- Which cases are the exceptions?