I can show the code of this file.
Please it is necessary to write the dimension of this square matrix, i.e.
N=33, then the dimension of the matrix it will be 1089x1089, in this form
the program was developped.
Here it goes the code:
Please , again, write N=33 to obtain a matrix 1089x1089... when you opening
this text file you will see the error message...
#include<stdlib>
#include<stdio>
#include<iostream>
#include<conio>
#include<math>
using namespace std;
float f1(int k, float h)
{
float z= k*h;
return(z);
}
/////////////////////////////////////////////////////////////////
float f2(int k, float h)
{
float z= k*h+1;
return(z);
}
/////////////////////////////////////////////////////////////////
float f3(int k, float h)
{
float z= k*h;
return(z);
}
/////////////////////////////////////////////////////////////////
float f4(int k, float h)
{
float z=1+ k*h;
return(z);
}
/////////////////////////////////////////////////////////////////
void printmatrix ( FILE *f, float **a,int kk)
{
for (int i=1;i<kk+1;i++)
{
for (int j=1;j<kk+2;j++)
{
printf("%1.0f ",a[i][j]);
fprintf(f,"%1.0f ",a[i][j]);
}
printf("\n");
fprintf(f,"\n");
}
}
int main()
{
int ttt,c,i,j,k,l,m,t,N,M;
cout<<"N indica la particion de la grilla a lo largo del eje OX\n";
cout<<"M indica la particion de la grilla a lo largo del eje OY\n";
cout<<"\n";
cout<<"N= ";
cin>>N;
float A=0.0; float B=1.0; float C=1.0;
float h=(B-A)/(N-1);
float tt=C/h;
M=floor(tt)+1 ;
cout<<"M= "<<M<<endl;
int kk=(N-2)*(M-2);
printf("h= %3.2f\n",h);
double **a = new double* [kk+2];
for(i = 0; i < kk+2; i++)
a[i] = new double[kk+2];
if(!a){
cerr << "Can't allocate space\n";
return 1;
}
FILE *f;
f=fopen("matrizascenso.txt","w+");
for (i=1;i<kk+1;i++)
for (j=1;j<kk+2;j++)
a[i][j]=0.0;
k=0; t=1;
for (i=1;i<kk+1;i++)
{
a[i][i]=-4.0;
if (i>1)
{
++k;
if (k!=M-2)
a[i][i-1]=a[i-1][i]=1;
else
{
a[i][i-1]=a[i-1][i]=0;
k=0;
}
}
}
k=1;
for(i=M-1;i<kk+1;i++)
{
a[i][k]=a[k][i]=1.0;
++k;
}
for (i=2;i<M-2;i++)
{
a[i][kk+1]=-f3(i,h);
a[i*(M-2)][kk+1]=-f2(i,h);
ttt=kk-(M-2)+i;
a[ttt][kk+1]=-f4(i,h);
ttt=(M-2)*(i-1)+1;
a[ttt][kk+1]=-f1(i,h);
}
a[1][kk+1]=-(f1(1,h)+f3(1,h));
a[M-2][kk+1]=-((f3(M-2,h)+f2(1,h)));
a[kk-(M-2)+1][kk+1]=-(f1(M-2,h)+f4(1,h));
a[kk][kk+1]=-(f2(M-2,h)+f4(M-2,h));
for (i=1;i<kk+1;i++)
{
for (j=1;j<kk+2;j++)
{
if ((j==kk+1)& (a[i][kk+1]!=0.0 ))
{
printf("%9.6f ",a[i][j]);
fprintf(f,"%9.6f ",a[i][j]);
}
else
{
printf("%1.0f ",a[i][j]);
fprintf(f,"%1.0f ",a[i][j]);
}
}
printf("\n");
fprintf(f,"\n");
}
// fprintf(f,"h= %6.4f\n",h);
fclose(f);
getch();
for (i=0; i<kk+2;i++)
{
delete[] a[i];
}
delete[] a;
}
/// end the program
Miguel Caro wrote:
>
> Hello everybody,
>
> Well, i am working with a Borland C++ version 4.0.
>
> I am trying to write in a text file ("data.txt") a matrix with dimension
> 1089x1089 elements.
>
> When i am going to check some elements of the matrix in this file then
> appears a message :
>
> "One or more lines were too long and have been truncated"
>
> and the last lines of the matrix in the file are converting in a
> "cocktail of numbers"="puzzle".
>
> What can i do to solve this problem?.
>
> The elements of the matrix will be using in another file.
>
>
> Bye.
>
--
View this message in context:
http://www.nabble.com/Error-message-%3A%22One-or-more-lines-were-too-long-and-have-been-truncated%22-tp20389924p20389931.html
Sent from the C-prog mailing list archive at Nabble.com.
