NonparaSign, C++ (gcc)

NonparaSign

//g++  7.4.0
//Nonparametric Test: The Sign Test
//code is created by Rezaul Hoque on January 28,2021
//please contact at jewelmrh@yahoo.com
#include <iostream>
#include <string>
#include <cmath>
using namespace std;
int plusCount(string [], int,string );
int minCount(string [], int,string);
int plusCount(string b[], int n, string plus)
{
int theCount=0;
for (int i=0;i<n;i++)
if(b[i]== "plus") ++theCount;
return theCount;
}

int minCount(string b[], int n, string minus)
{
int minCount=0;
for (int i=0;i<n;i++)
if(b[i]== "minus") ++minCount;
return minCount;
}

int main()
{
int n=24, x= 250;
string plus,minus;
float a[n]={271,230,198,275,282,225,284,219,253,216,262,288,236,291,253,224,264,295,211,252,294,243,272,268};
string * b = new string[n];
for(int i=0;i<n; i++){
if (a[i]-x >0) b[i] ="plus";
else if (a[i]-x <0) b[i] ="minus";
else b[i]="zero";
}
for(int i=0;i<n; i++){
cout <<" "<<b[i]<<endl;
}
cout <<"There are "<<plusCount(b,n,plus)<< " pluses and "<<minCount(b,n,minus)<< " minuses.\n";
float anysign=15, p=0.5,q=0.5, zed;
zed = (anysign-0.5-n*p)/sqrt(n*p*q);
cout <<" z =\t"<<zed<<endl;
if (zed>1.645) cout <<"Reject the null hypothesis at 0.05 level.\n";
else 
  cout <<"Accept the null hypothesis at 0.05 level.";
delete [] b;
return 0;
}


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