Hi Subhendu,
Your code contains too many basic C++ errors. I fixed most of them below
Rene Brun
{
gROOT->Reset();
c1 = new TCanvas("c1","yscan ",1100,50,800,600);
c1->SetGridx();
c1->SetGridy();
const Int_t m=113;
Float_t x[m],y[m],w[m],z[m],v[m],ny[m],d[m];
FILE *fp[2];
fp[0] = fopen("pt1.dat","r");
fp[1] = fopen("pt2.dat","r");
TGraph *gr[2];
for(Int_t j=0;j<2;j++){
for(Int_t i=0;i<m;i++) {
fscanf(fp[j],"%f",&x[i]);
fscanf(fp[j],"%f",&y[i]);
fscanf(fp[j],"%f",&w[i]);
fscanf(fp[j],"%f",&z[i]);
fscanf(fp[j],"%f",&v[i]);
if(y[i]<0) ny[i]=-y[i];
else ny[i]=y[i];
}
gr[j] = new TGraph(m,ny,z);
gr[j]->SetLineColor(j+1);
gr[j]->Draw("AC");
fclose(fp[j]);
}
}
On Sat, 12 Oct 2002, Subhendu Chakrabarti wrote:
>
>
> I have corrected my code .Still the problem persists.
> Thanks for helping.
>
> {
> gROOT->Reset();
> c1 = new TCanvas("c1","yscan ",1100,50,800,600);
> c1->SetGridx();
> c1->SetGridy();
>
>
> Int_t m=113;
> Float_t x[m],y[m],w[m],z[m],v[m],ny[m],d[m],
>
> FILE *fp[2];
> fp[0] = fopen("pt1.dat","r");
> fp[1] = fopen("pt2.dat","r");
>
>
> for(Int_t j=0;j<2;j++){
> for(Int_t i=0;i<m;i++)
> {
> fscanf(fp[j],"%f",&x[i]);
> fscanf(fp[j],"%f",&y[i]);
> fscanf(fp[j],"%f",&w[i]);
> fscanf(fp[j],"%f",&z[i]);
> fscanf(fp[j],"%f",&v[i]);
> if(y[i]<0)
> {
> ny[i]=-y[i];
> }
> else ny[i]=y[i];
>
>
> }
>
> TGraph *gr[j] = new TGraph(m,ny,z);
>
>
> gr[j]->SetLineColor(j+1);
> gr[j]->Draw("AC");
>
> fclose(fp[j]);
> }
> }
> ***********************************************
> Warning: Automatic variable fp[0] allocated in global scope FILE:ycomp.C
> LINE:12
> Error: Array index out of range fp[1] -> [1] valid upto fp FILE:ycomp.C
> LINE:13
> *** Interpreter error recovered ***
> *************************************************************
>
>
> Subhendu Chakrabarti
>
>
>
>
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