I've been working on this for a while and I have this code but the decimals are a few off.

Here is the description of the assignment.

Assignment specs:

The temperature distribution in a thin metal plate with constant (or isothermal) temperatures on each side can be modeled using a two-dimensional grid, as shown in the figure below. Typically, the number of points in the grid are specified, as are the constant temperatures on four sides. The temperatures of the interior points are usually initialized to zero, but they change according to the temperatures around them. Assume that the temperature of an interior point can be computed as the average of the four adjacent temperatures; the points shaded in the grid below represent the adjacent temperatures for the point labeled x in the grid. Each time that the temperature of an interior point changes, the temperatures of the points adjacent to it change. These changes continue until a thermal equilibrium is achieved and all temperatures become constant.

Basic algorithm:

1. Get from the user the names of the input and output files.
2. Read from the input file the initial temps for top, right, bottom, and left sides of plate.
3. Read from the input file the tolerance for equilibrium.
4. Initialize the edges of the 2D grid with initial temps you got from the input file, and initialize the inner cells of the grid to 0.0.
5. Continue updating temperature values within inner cells until equilibrium is reached.
6. Output to the output file the values of the inner cells of the grid after equilibrium obtained.

Step 5 details

• When updating the grid's temperatures always start at the top, left inner cell and update that row before updating the row below it. So, the first cell to be updated will be grid[1][1], then grid[1][2], and so on.
• Never change an edge cell's temperature.
• A cell's new temperature will always be the average of the 4 cells adjacent to it, the cells immediately above, below, left, and right of the cell.
• You should update all inner cells of the entire grid, while always keeping track of the largest difference between the old value and the new calculated value for a cell. Once you have completely updated the grid, if your max difference is within the tolerance level, equilibrium has been reached. You are done. Go ahead and output the temperatures in each cell of your grid. If not, you need to update the entire grid again.
• You are required to use 2D arrays, NOT vectors, for this assignment.
• The grid dimensions will always be the same as the grid example above (6 X 8).

Input/Output File Specifications

Input and output file names come from the user. Ask for input file first.

Input File

The input file will have the 4 starting temps on one line, each separated by a space and the tolerance on the second line.

29 45 0 15

0.5

Output File

When completed, the output file should list the temperatures of the inner cells only:

20.6404 22.6151 23.944 25.7453 28.7711 34.1826

16.4471 17.5668 19.1289 21.8528 26.5254 34.0902

13.1644 12.8385 13.9106 16.6151 21.7503 30.7639

8.81194 7.2602 7.58734 9.35255 13.3295 22.2734

Submission Instructions

Submit on Canvas. Make sure to label your file tempdistribution.cpp

Now I have done this but, my code it gives me different results.

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