Function not returning correct values

[prads]

Hello,
the following code doesnot return the corect values to the main function. However it prints the correct values within the function. Also the same when written in C works absolutely fine. Pls tell me where im going wrong and correct me. U can run it and check!
Thanks
Prads

#include <iostream>
#include <fstream>
#include <cstring>
#include <cmath>
#include <iomanip> 
using namespace std;
 
     float *calcloopcoef(float lbw,float zeta,float k);
      int main()
      {
          float *arrt;
          arrt=calcloopcoef(25,0.7,.25);
          cout<<"The returned values are"<<endl<<arrt[0]<<endl<<arrt[1]<<endl; 
 
                 getchar();
          return 0;
          }
 
          float *calcloopcoef(float lbw,float zeta,float k)
          {
                float arrtau[2],wn;
                wn=lbw*8*zeta/(4*pow(zeta,2)+1);
      arrtau[0]=k/pow(wn,2);
      arrtau[1]=(2*zeta)/wn;
      cout<<"values within fn"<<endl<<arrtau[0]<<endl<<arrtau[1]<<endl;
      return arrtau;
      }

[Meetee]

Hello,
the following code doesnot return the corect values to the main function. However it prints the correct values within the function. Also the same when written in C works absolutely fine. Pls tell me where im going wrong and correct me. U can run it and check!
Thanks
Prads

#include <iostream>
#include <fstream>
#include <cstring>
#include <cmath>
#include <iomanip> 
using namespace std;
 
     float *calcloopcoef(float lbw,float zeta,float k);
      int main()
      {
          float *arrt;
          arrt=calcloopcoef(25,0.7,.25);
          cout<<"The returned values are"<<endl<<arrt[0]<<endl<<arrt[1]<<endl; 
 
                 getchar();
          return 0;
          }
 
          float *calcloopcoef(float lbw,float zeta,float k)
          {
                float arrtau[2],wn;
                wn=lbw*8*zeta/(4*pow(zeta,2)+1);
      arrtau[0]=k/pow(wn,2);
      arrtau[1]=(2*zeta)/wn;
      cout<<"values within fn"<<endl<<arrtau[0]<<endl<<arrtau[1]<<endl;
      return arrtau;
      }

Your function should retrurn pointer of float type. So you will have to take a float pointer array dynamically and then return that pointer.

Regards

[prads]

Your function should retrurn pointer of float type. So you will have to take a float pointer array dynamically and then return that pointer.

Regards

I am sorry but I couldnot understand much from that and with whatever I interpreted, I couldnot get the output. So can u pls make the required changes to my program and post it..
thanks,
prads

[Meetee]

I am sorry but I couldnot understand much from that and with whatever I interpreted, I couldnot get the output. So can u pls make the required changes to my program and post it..
thanks,
prads

float *calcloopcoef(float lbw,float zeta,float k)
{
       float wn;
       float * arrtau = new float[2]; // change here
       wn=lbw*8*zeta/(4*pow(zeta,2)+1);
       arrtau[0]=k/pow(wn,2);
       arrtau[1]=(2*zeta)/wn;
       cout<<"values within fn"<<endl<<arrtau[0]<<endl<<arrtau[1]<<endl;
       return arrtau;
       delete [] arrtau;
}
 

Change your code like this. It may helps.

Regards

[prads]

float *calcloopcoef(float lbw,float zeta,float k)
{
       float wn;
       float * arrtau = new float[2]; // change here
       wn=lbw*8*zeta/(4*pow(zeta,2)+1);
       arrtau[0]=k/pow(wn,2);
       arrtau[1]=(2*zeta)/wn;
       cout<<"values within fn"<<endl<<arrtau[0]<<endl<<arrtau[1]<<endl;
       return arrtau;
       delete [] arrtau;
}
 

Change your code like this. It may helps.

Regards

hey great!....thanks that works......

[weaknessforcats]

hey great!....thanks that works......

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