gpt4 book ai didi

c++ - 如何修复此循环? C++

转载 作者:行者123 更新时间:2023-11-28 07:54:44 24 4
gpt4 key购买 nike

<分区>

Possible Duplicate:
C++ Loop Not Looping Appropriately

警告..我是 C++ 编程的新手...我有一个 20 x 20 的数组,用于输出盘子的热度。我需要通过一个循环重复,直到数组中没有单元格的变化超过 0.1 度(我通过每次迭代刷新值。您将如何监视数组中任何单元格的最大变化以确定何时停止迭代?对现在我试过了,但下面的输出不正确。

#include <iostream>
#include <string>
#include <fstream>
#include <iomanip>

using namespace std;


const int array_size = 20; // set array size and neighbors to calculate rest of cells
const int cell_neighbors = 4;

void initialize(double hot_plate[][array_size]); //functions here
bool writeFile(const double hot_plate[][array_size],
const string file_name);

double sum_cell(const double hot_plate[][array_size],
const int cell_X, const int cell_Y);
double value_cell(const double hot_plate[][array_size],
const int cell_X, const int cell_Y);



int main()
{
double hot_plate[array_size][array_size];//set variables

initialize(hot_plate); //run function

string file_name = "hot_plate.csv"; //file name for Excel

//repeat until stable
int repeat_until_stable = 1000;
while ( repeat_until_stable > 0)
{
for (int a = 1; a < array_size - 1; a++)
{
for (int b = 1; b < array_size - 1; b++)
{

{
hot_plate[a][b] = sum_cell(hot_plate, b, a);
}
}
}
repeat_until_stable--;
}

if (writeFile(hot_plate, file_name)) //check functionality of the program
{
cout << "Excel File created\n";
}
else
{
cout << "The Excel file did not write\n";
}

system("pause");

return 0;
}

//function definition

double sum_cell(const double hot_plate[][array_size],
const int cell_X, const int cell_Y)
{
double cell_num = hot_plate[cell_X - 1][cell_Y]; // Top
cell_num += hot_plate[cell_X][cell_Y - 1]; // Left
cell_num += hot_plate[cell_X][cell_Y + 1]; // Right
cell_num += hot_plate[cell_X + 1][cell_Y]; // Bottom

cell_num /= cell_neighbors; // find average of the 4 values closest to cell

return cell_num;
}

// setup the array so all values are defined
void initialize(double hot_plate[][array_size])
{
for (int a = 0; a < array_size; a++)
{
for (int b = 0; b < array_size; b++)
{
if (a == 0 || a == array_size - 1)
{
if (b == 0 || b == array_size - 1)
{
hot_plate[a][b] = 0.0;
}
else
{
hot_plate[a][b] = 100.0;
}
}
else
{
hot_plate[a][b] = 0.0;
}
}
}
}
double value_cell(const double hot_plate[][array_size],
const int cell_X, const int cell_Y)
{
double cell_value = hot_plate[cell_X][cell_Y]; // cell value

return cell_value;
}
// Write the data to the Excel CSV file
bool writeFile(const double hot_plate[][array_size],
const string file_name)
{
// open the excel file
ofstream fout(file_name);
if (fout.fail())
return false;

for (int a = 0; a < array_size; a++)
{
for (int b = 0; b < array_size; b++)
{
fout << hot_plate[a][b];
if ( b < array_size - 1)
{
fout << ", ";
}
else if (a != array_size - 1)
{
fout << endl;
}
}
}

// close the input stream from the file.
fout.close();
return true;
}

24 4 0
Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
广告合作:1813099741@qq.com 6ren.com