| 1 | <html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title> |
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| 2 | First Example |
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| 3 | </title><meta name="generator" content="DocBook XSL Stylesheets V1.66.1"><link rel="start" href="index.html" title="CLP User Guide"><link rel="up" href="ch02.html" title="Chapter 2. |
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| 4 | Basic Model Classes |
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| 5 | "><link rel="prev" href="ch02.html" title="Chapter 2. |
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| 6 | Basic Model Classes |
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| 7 | "><link rel="next" href="ch02s03.html" title=" |
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| 8 | Getting at the Solution |
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| 10 | First Example |
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| 11 | </th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ch02.html">Prev</a> </td><th width="60%" align="center">Chapter 2. |
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| 12 | Basic Model Classes |
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| 13 | </th><td width="20%" align="right"> <a accesskey="n" href="ch02s03.html">Next</a></td></tr></table><hr></div><div class="section" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="firstexample"></a> |
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| 14 | First Example |
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| 15 | </h2></div></div></div><p> |
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| 16 | Below is our first CLP sample program. It is short enough to present in full |
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| 17 | (this code can be found in the CLP Samples directory, see |
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| 18 | <a href="ch04.html" title="Chapter 4. |
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| 19 | More Samples |
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| 20 | ">Chapter 4, <i> |
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| 21 | More Samples |
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| 22 | </i></a>). Most of the remaining examples in this Guide |
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| 23 | will take the form of small code fragments. |
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| 24 | </p><div class="example"><a name="id4768485"></a><p class="title"><b>Example 2.1. minimum.cpp</b></p><pre class="programlisting"> |
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| 25 | |
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| 26 | // Copyright (C) 2002, International Business Machines |
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| 27 | // Corporation and others. All Rights Reserved. |
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| 28 | |
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| 29 | #include "ClpSimplex.hpp" |
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| 30 | int main (int argc, const char *argv[]) |
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| 31 | { |
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| 32 | ClpSimplex model; |
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| 33 | int status; |
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| 34 | if (argc<2) |
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| 35 | status=model.readMps("../../Mps/Sample/p0033.mps"); |
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| 36 | else |
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| 37 | status=model.readMps(argv[1]); |
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| 38 | if (!status) { |
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| 39 | model.primal(); |
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| 40 | } |
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| 41 | return 0; |
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| 42 | } |
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| 43 | |
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| 44 | </pre></div><p> |
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| 45 | This sample program creates a <tt class="classname">ClpSimplex</tt> model, |
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| 46 | reads an MPS file, and if there are no errors, solves it using the primal |
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| 47 | algorithm. The program is easy to follow, but it is not terribly useful: |
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| 48 | it does not attempt to inspect the results of the solve. There are two main |
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| 49 | kinds of results: a "status" describing what happened to the model |
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| 50 | during the solve, and arrays filled with solution values. Both will be |
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| 51 | addressed in this chapter. |
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| 52 | </p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ch02.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch02.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="ch02s03.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 2. |
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| 53 | Basic Model Classes |
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| 54 | </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> |
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| 55 | Getting at the Solution |
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| 56 | </td></tr></table></div></body></html> |
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