Hi there,

I am trying to assign value (double) for an variable from a separate data file. however, it fails.

Here below is the code I wrote:

#include <iostream>
#include <fstream>

using std::ofstream;

using namespace std;
int Npoint=0;
double X[100];
double Y[100];
double Z[100];

main (){
/* Read in data from the specified
file. File format is pretty simple:
one integer that give the number of
point, then the X, Y, Z location of each.
In the Point.dat I store the data like this:
3
1.0 4.3 3.4
2.5 -3.2 4.2
1.5 1.2 -1.2

*/

ifstream inPoint("Point.dat", ios::in);
//exit program if can not open file.
if(!inPoint){
cerr << "File could not be opened." << endl;
exit(1);
}

inPoint >> Npoint >> endl;
for(int i=0; i<Npoint; i++)
inPoint >> X[i] >> Y[i] >> Z[i] >> endl;

inPoint.close();

return 0;

}

However, when I run the program give wrong results (only recognize Npoint correctly and give the wrong coordinates.)

Please help me to read the data correctly.
Thank you very much for your help.

Best Regards,

Truong Son

Best Regards,

Truong Son

Your program ran fine for me after I removed the the endl's from your input statements. endl is for output streams not input ones.