Read Dat text file in c++ and output values to new text file

Quote:

I was thinking that I could create a struct with a Node, X, Y and Z variable and from that it should be relatively easy to output to whatever format is required. Not really sure where to start so any help would be appreciated.

// Textreadwrite.cpp : main project file.<br />
<br />
#include "stdafx.h"<br />
#include <string><br />
#include <vector><br />
#include <iostream><br />
#include <fstream><br />
#include <sstream><br />
#include <cmath><br />
#include <cstdlib><br />
using namespace std;<br />
<br />
float** ReadTable(const char* FileName, int& RowNum, int& ColNum) {<br />
	string line;<br />
	ifstream in_stream(FileName);<br />
	ofstream out_stream;<br />
<br />
	// Determine number of rows and columns in file<br />
	// Program halts if rows are not of same length******************Doesn't Work*******************<br />
		while(getline(in_stream,line,'\n')) {<br />
		string segments;<br />
		int ColsPerRow = 0; // Initialize counter<br />
		stringstream ss;<br />
		ss << line;<br />
		while (getline(ss,segments,'\t')) {<br />
			ColsPerRow++;<br />
		}<br />
		if (RowNum == 0) {<br />
			// Define number of columns in file as the number<br />
			// of columns in the first row.<br />
			ColNum = ColsPerRow;<br />
		} else {<br />
			if (ColsPerRow != ColNum) {<br />
				cerr << "Row " << RowNum << " is not the same length "<br />
					"as row 0." << endl;<br />
				exit(0);<br />
			}<br />
		}<br />
		RowNum++;<br />
	}<br />
	// Declare arrays for storing and accessing<br />
	// data from the file.<br />
	float** pa2d = new float*[RowNum];<br />
	float*  parr = new float[RowNum*ColNum];<br />
	// Reposition to start of stream buffer.<br />
	in_stream.clear();              <br />
	in_stream.seekg(0, ios::beg);<br />
	// Write data to array:<br />
	for (int i = 0; i < (RowNum*ColNum); i++) {<br />
		// Declarations.<br />
		float in_float;<br />
		char in_char;<br />
		string in_s;<br />
		stringstream in_ss;<br />
		// Insert data entry into stringstream.<br />
		in_stream >> in_s;<br />
		in_ss << in_s;<br />
		// Convert data entry to float.<br />
		in_ss >> in_float;<br />
	}<br />
	// Prepare 2D array to be returned. 	<br />
	// Define pointer position at start of each row.<br />
	for (int i = 0; i < RowNum; i++) {<br />
		pa2d[i] = parr + (i*ColNum);<br />
	}<br />
	return pa2d;<br />
}<br />
void PrintMatrix(float** matrix, const int RowNum, const int ColNum) {<br />
	// Print "matrix" to console.<br />
	cout << '\n';<br />
	for (int i=0; i < RowNum; i++) {<br />
		for(int j=0; j < ColNum; j++) {<br />
			cout << (j?"\t":"") << matrix[i][j];<br />
			// Don't insert tab before first element of each row.<br />
		}<br />
		cout << '\n';<br />
	}<br />
}<br />
void OutPut(float** matrix, const int RowNum, const int ColNum) {<br />
	//Print matrix to text file<br />
	ofstream out_stream;<br />
	out_stream.open("outfile.dat"); // open (connect) output file stream<br />
<br />
	if (out_stream.fail())<br />
	{<br />
		cout << "Output file opening failed.\n";<br />
		cout << '\n';<br />
	}<br />
	for (int i=0; i < RowNum; i++) {<br />
		for(int j=0; j < ColNum; j++) {<br />
<br />
			out_stream << (j?"\t":"") << matrix[i][j];<br />
			// Don't insert tab before first element of each row.<br />
		}<br />
		out_stream << '\n';<br />
	}<br />
}<br />
int main() {<br />
	// Define input filename.<br />
	const char* FileName = "test3.txt";<br />
	// Initialize row and column counters.<br />
	int RowNum = 0;<br />
	int ColNum = 0;<br />
	// Perform reading of data file into 2D array.<br />
	float** data = ReadTable(FileName,RowNum,ColNum);<br />
<br />
	PrintMatrix(data,RowNum,ColNum);<br />
	OutPut(data,RowNum,ColNum);<br />
<br />
	system ("pause");<br />
	return(0);<br />
}</cstdlib></cmath></sstream></fstream></iostream></vector></string>