Cpp Code for Normal Distribution

This cpp programming code is used to find the normal distribution. You can select the whole cpp code by clicking the select option and can use it. When you click text, the code will be changed to text format. This cpp program code will be opened in a new pop up window once you click pop-up from the right corner. You can just copy, paste this cpp code and use it to find the normal distribution.

#include<iostream>
int main()
{
  double x,y,w,Z_MAX=6,mean,sd,z;
  mean=100,x=106,sd=6;
  if(mean<x)
  y=x-mean;
  else
  y=mean-x;
  z=y/sd;
  if (z == 0.0)
  {
  x = 0.0;
  }
  else
  {
  y = 0.5 *z;
  if (y > (Z_MAX * 0.5))
  {
  x = 1.0;
  }
  else if (y < 1.0)
  {
  w = y * y;
  x = ((((((((0.000124818987 * w - 0.001075204047) * w
           + 0.005198775019) * w - 0.019198292004) * w
           + 0.059054035642) * w - 0.151968751364) * w
           + 0.319152932694) * w - 0.531923007300) * w
           + 0.797884560593) * y * 2.0;
  }
  else
  {
  y -= 2.0;
  x = (((((((((((((-0.000045255659 * y
           + 0.000152529290) * y - 0.000019538132) * y
           - 0.000676904986) * y + 0.001390604284) * y
           - 0.000794620820) * y - 0.002034254874) * y
           + 0.006549791214) * y - 0.010557625006) * y
           + 0.011630447319) * y - 0.009279453341) * y
           + 0.005353579108) * y - 0.002141268741) * y
           + 0.000535310849) * y + 0.999936657524;
  }
  if (z>0.0)
  z=(x+1.0)*0.5;
  else
  z=(1.0-x)*0.5;
  }
  std::cout.precision(4);
  std::cout<<"Normal Distribution:"<<z;
  return 0;
}
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