read a text file and put it in an array

yamid

Hi ,
I have a text file saved in C:\PROG\t.txt . Apart of the text file which is interested is in below.
I want the program to read the text file and find the the values right after "BIC" that terminate with the slash and put them in a 8*8 array
BIC[,]=new double [8,8];
in which each line is i and each column is j. if there is not enough values it should be considered as "zero".
I mean:
BIC[0,0]=.09938 , BIC[0,1]=0,..., BIC[0,7]=0
BIC[1,0]=.13000, BIC[1,1]=.00081, BIC[1,2]=0,..., BIC[1,7]=0
...

Thanks

A part of my TEXT FILe :

-- Shift coefficients for EoS
SSHIFT
-0.08652 -0.05010 -0.00502 0.00035 0.00580
0.04460 0.04532 0.04978 0.07032 0.08532 /

-- Binary interaction coefficients for EoS
BIC
.09938
.13000 .00081
.13090 .00262 .00103
.12076 .00583 .00397 .00000
.11887 .07122 .01438 .00504 .00080
.11859 .07232 .02062 .00905 .00216 .00036
.11859 .07993 .03723 .01827 .00625 .00267 .00003
.11847 .09926 .05789 .02799 .01083 .00607 .00011 .00000
.11849 .10308 .06488 .03601 .01343 .00809 .00020 .00001 .00000
/

-- Component parachors
PARACHOR
76.7 66.454 100.839 154.612 223.309 314.477 579.64 695.812 995.076 1590.748 /

3 Replies

Know the answer? Post it — somebody with the same question will find it here.

yamid15y ago
Thanks.
Vulpes15y ago
Well, there are actually 9 lines between BIC and the slash so you need a 9 x 9 double array to accommodate them.

If I've understood it correctly, then the following should work (even if there are less than 9 lines) but contains virtually no error checking. So if the file is not exactly as expected then it may blow up:

using System;
using System.IO;

class Program
{
static void Main()
{
double[,] BIC = new double [9,9]; // all zero by default
string filePath = "yamid8.txt"; // or whatever
StreamReader sr = new StreamReader(filePath);
string line;

while ((line = sr.ReadLine()) != null)
{
if (line.StartsWith("BIC")) break;
}

for(int i = 0; i < 9; i++)
{
line = sr.ReadLine().Trim();
if (line.StartsWith("/")) break;
string[] numbers = line.Split(' ');
for(int j = 0; j < numbers.Length; j++)
{
double.TryParse(numbers[j], out BIC[i, j]);
}
}

sr.Close();

// check it worked
for(int i = 0; i < 9; i++)
{
for(int j = 0; j < 9; j++)
{
Console.Write("{0:N5} ", BIC[i,j]);
}
Console.WriteLine();
}

Console.ReadKey();
}
}
Dorababu Meka15y ago
Not exactly clear what u want can u please properly frame the question by giving sample input and output u needed