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

[code=cpp]
#include <iostream>
#include <fstream>
#include <cstring>
#include <cmath>
#include <iomanip>
using namespace std;

float *calcloopcoef(f loat lbw,float zeta,float k);
int main()
{
float *arrt;
arrt=calcloopco ef(25,0.7,.25);
cout<<"The returned values are"<<endl<<arr t[0]<<endl<<arrt[1]<<endl;

getchar();
return 0;
}

float *calcloopcoef(f loat 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<<arrt au[0]<<endl<<arrta u[1]<<endl;
return arrtau;
}[/code]

[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

[code=cpp]
#include <iostream>
#include <fstream>
#include <cstring>
#include <cmath>
#include <iomanip>
using namespace std;

float *calcloopcoef(f loat lbw,float zeta,float k);
int main()
{
float *arrt;
arrt=calcloopco ef(25,0.7,.25);
cout<<"The returned values are"<<endl<<arr t[0]<<endl<<arrt[1]<<endl;

getchar();
return 0;
}

float *calcloopcoef(f loat 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<<arrt au[0]<<endl<<arrta u[1]<<endl;
return arrtau;
}[/code]

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

[CODE=CPP]
float *calcloopcoef(f loat 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<<arrt au[0]<<endl<<arrta u[1]<<endl;
return arrtau;
delete [] arrtau;
}
[/CODE]

Change your code like this. It may helps.

Regards

[prads]

[CODE=CPP]
float *calcloopcoef(f loat 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<<arrt au[0]<<endl<<arrta u[1]<<endl;
return arrtau;
delete [] arrtau;
}
[/CODE]

Change your code like this. It may helps.

Regards

hey great!....thank s that works......

[weaknessforcats]

hey great!....thank s that works......

You were given a spoonfed solution. Do you understand what you were given?

The danger in spoonfeeding is that you never figure this stuff out on your own and until you do that, you haven't learned it.