Dark Bit Factory & Gravity

PROGRAMMING => C / C++ /C# => Topic started by: lubzy95 on May 30, 2017

Title: i have had this code but i get the error subscript is not of integral type
Post by: lubzy95 on May 30, 2017

#pragma once
#include "stdafx.h"
#include <iostream>
#include <iomanip>
#include <cmath>
#include <fstream>
using namespace std;

int main()
{
   //declare an array
   float numbers [10];
   double sum;
   double mean;
   double standardDeviation;
   double AA;
   double sdresult;
   double mode;
   double max;
   double modeposition;

   //storing 30 numbers entered by user in an array
   cout<<"enter thirty floating point numbers"<<endl;

   //compute sum, mean and standard deviation
   for (int i = 0; i < 10; ++i)
   {
        cin >> numbers;
        sum += numbers;
      mean = sum /10;
      AA += pow(numbers - mean,2);
      max= numbers;
      modeposition = i;
    }
   sdresult = sqrt(AA/10);
   mode = numbers[modeposition];
   cout<<"sum="<<sum <<endl;
   cout<<"mean="<<mean <<endl;
    cout<<"standard Deviation = " <<sdresult<<endl;
   cout<<"mode="<<mode<<endl;

   return 0;
}

Title: Re: i have had this code but i get the error subscript is not of integral type
Post by: lubzy95 on May 30, 2017

please assist me on where i might be going wrong
thank you in advance

Title: Re: output console disappearing
Post by: lubzy95 on May 30, 2017

#pragma once
#include "stdafx.h"
#include <iostream>
#include <iomanip>
#include <cmath>
#include <fstream>
using namespace std;

int main()
{
   //declare an array
   float numbers [10];
   double sum;
   double mean;
   double standardDeviation;
   double AA;
   double sdresult;
   double mode;
   double max;
   double modeposition;

   //storing 30 numbers entered by user in an array
   cout<<"enter thirty floating point numbers"<<endl;

   //compute sum, mean and standard deviation
   for (int i = 0; i < 10; ++i)
   {
        cin >> numbers;
        sum += numbers;
      mean = sum /10;
      AA += pow(numbers - mean,2);
      max= numbers;
      modeposition = i;
    }
   sdresult = sqrt(AA/10);
   cout<<"sum="<<sum <<endl;
   cout<<"mean="<<mean <<endl;
    cout<<"standard Deviation = " <<sdresult<<endl;
   cout<<"mode="<<modeposition<<endl;

   return 0;
}

Title: Re: i have had this code but i get the error subscript is not of integral type
Post by: lubzy95 on May 30, 2017

i have managed to get it running but the moment i click enter after entering my last value in the console, the console just disappears
please help me out thank you

Title: Re: i have had this code but i get the error subscript is not of integral type
Post by: Rbz on May 31, 2017

Hi,

You have problems with uninitialized variables "sum" and "AA" and errors using the array "numbers".

Try this out:

Code: [Select]

#include <iostream>
#include <cmath>
#include <fstream>
using namespace std;

int main()
{
   //declare an array
   float numbers[10];
   double sum;
   double mean;
   double standardDeviation;
   double AA;
   double sdresult;
   double mode;
   double max;
   double modeposition;

   sum = 0;
   AA = 0;

   //storing 30 numbers entered by user in an array
   cout<<"enter thirty floating point numbers"<<endl;

   //compute sum, mean and standard deviation
   for (int i = 0; i < 10; ++i)
   {
        cin >> numbers[i];
        sum += numbers[i];
      mean = sum /10;
      AA += pow(numbers[i] - mean,2);
      max= numbers[i];
      modeposition = i;
    }
   sdresult = sqrt(AA/10);
   cout<<"sum="<<sum <<endl;
   cout<<"mean="<<mean <<endl;
    cout<<"standard Deviation = " <<sdresult<<endl;
   cout<<"mode="<<modeposition<<endl;

   return 0;
}


Title: Re: i have had this code but i get the error subscript is not of integral type
Post by: lubzy95 on May 31, 2017

hi
i get the same issue the console disappears after i enter the last value