【用c++计算截面积已知以下坐标点,求此截面的面积,即各个小-查字典问答网
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来自陈功的问题

  【用c++计算截面积已知以下坐标点,求此截面的面积,即各个小长方形面积相加,用c++程序算出.25.77051.7260.00025.89951.7260.00026.09851.7260.01626.23551.7260.10426.41551.7260.15126.57451.7260.21926.77451.7260.25】

  用c++计算截面积

  已知以下坐标点,求此截面的面积,即各个小长方形面积相加,用c++程序算出.

  25.77051.7260.000

  25.89951.7260.000

  26.09851.7260.016

  26.23551.7260.104

  26.41551.7260.151

  26.57451.7260.219

  26.77451.7260.250

  26.94851.7260.307

  27.09651.7260.388

  27.29951.7260.420

  27.47651.7260.477

  27.67051.7260.519

  27.82151.7260.602

  28.01051.7260.651

  28.21351.7260.690

  28.37051.7260.770

  28.57451.7260.811

  28.73951.7260.885

  28.92251.7260.946

  29.09051.7261.020

  29.23351.7261.115

  29.41351.7261.182

  29.60251.7261.242

  29.76151.7261.327

  29.91351.7261.419

  30.08651.7261.494

  30.23251.7261.592

  30.38351.7261.686

  30.53751.7261.779

  30.72651.7261.847

  30.82951.7261.979

  30.98051.7262.076

  31.15551.7262.156

  31.27751.7262.276

  31.42651.7262.376

  31.62651.7262.441

  31.83351.7262.503

  31.98551.7262.604

  32.15351.7262.694

  32.30851.7262.795

  32.47651.7262.888

  32.67651.7262.960

  32.85351.7263.048

  33.07951.7263.106

  33.21351.7263.225

  33.42951.7263.291

  33.58251.7263.399

  33.77251.7263.485

  33.97851.7263.562

  34.12151.7263.679

  34.34651.7263.746

  34.52251.7263.845

  34.69451.7263.947

  34.90651.7264.026

  35.12851.7264.101

  35.33751.7264.185

  35.50251.7264.296

  35.69051.7264.395

  35.90551.7264.479

  36.10651.7264.572

  36.35951.7264.638

  36.60451.7264.710

  36.79951.7264.812

  36.95851.7264.933

  37.26651.7264.976

  37.51851.7265.051

  37.70951.7265.160

  37.90651.7265.267

  38.07151.7265.392

  38.20551.7265.533

  38.42951.7265.630

  38.61551.726

3回答
2020-05-20 08:28
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刘宝友

  #include<iostream>

  #include<fstream>

  #include<cmath>

  usingnamespacestd;

  typedefstructPOINT{

  doublex;

  doubley;

  doublez;

  };

  intmain()

  {

  ifstreamifile("data.txt");

  POINT sPoint,

  ePoint;

  doublearea=0;

  ifile>>ePoint.x>>ePoint.y>>ePoint.z;

  for(;!ifile.eof();)

  {

  sPoint=ePoint;

  ifile>>ePoint.x>>ePoint.y>>ePoint.z;

  area+=fabs((ePoint.x-sPoint.x)*(ePoint.z-sPoint.z));

  }

  cout<<area<<endl;

  }结果6.02555

2020-05-20 08:30:37
陈功

  sPoint=ePoint;是什么意思呢?

2020-05-20 08:34:26
刘宝友

  当前矩形不是和上个矩形公用两个点么。。

2020-05-20 08:35:03

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