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<h1>read_lp, read_LP</h1>
<p>
Create an lprec structure and read an lp model from file.</p>
<p>
<b>lprec *read_lp(FILE </b>*<i>stream</i><b>, int </b><i>verbose</i><B>, char </B>*<I>lp_name</I><b>);</b></p>
<P><B>lprec *read_LP(char </B>*<I>filename</I><B>, int </B><I>verbose</I><B>, char </B>*<I>lp_name</I><B>);</B></P>
<p class="label">
<b>Return Value</b></p>
<p>
Returns a pointer to a new lprec structure. This must be provided to almost all
lp_solve functions.<br>
A <b>NULL</b> return value indicates an error. Specifically file could not be
opened or file has wrong structure or not enough memory available to setup
an lprec structure.</p>
<p class="label">
<b>Parameters</b></p>
<p class="dt">
<i>stream</i></p>
<p class="indent">
Pointer to <b>FILE</b> structure.</p>
<P class="dt"><I>filename</I></P>
<P class="indent">
Filename to read the lp model from.
<P class="indent">
<i>verbose</i>
<p class="indent">The verbose level. Can be one of the following values:<br>
CRITICAL (1), SEVERE (2), IMPORTANT (3), NORMAL (4), DETAILED (5), FULL (6)</p>
<p>See also <A href="set_verbose.htm">set_verbose</A> and <A href="get_verbose.htm">get_verbose</A>.</p>
<P class="indent"><I>lp_name</I>
<P class="indent">Initial name of the model. See also <A href="set_lp_name.htm">set_lp_name</A>
and <A href="get_lp_name.htm">get_lp_name</A>. May be <b>NULL</b> if the model
has no name.</P>
<p class="label">
<b>Remarks</b></p>
<P>
The <b>read_lp</b> and <B>read_LP</B> functions construct a
new lprec structure and read the model from <i>filename</i>. <B>read_lp</B>
needs a file pointer to an already opened file. <B>read_LP </B>accepts the name
of the file. The latter function will generally be more convenient.</P>
<P>
The model in the file must be in <a href="lp-format.htm">lp-format</a>.
<br>
<br>
It is advised not to read/write the lprec structure. Instead, use the function
interface to communicate with the lp_solve library. This because the structure
can change over time. The function interface will be more stable.</P>
<p class="label">
<b>Example</b></p>
<pre><code>#include <stdio.h>
#include <stdlib.h>
#include "lp_lib.h"
int main(void)
{
lprec *lp;
/* Read LP model */
lp = read_LP("model.lp", NORMAL, "test model");
if(lp == NULL) {
fprintf(stderr, "Unable to read model\n");
return(1);
}
/* Model read */
/*
.
.
.
*/
delete_lp(lp);
return(0);
}
</code></pre>
<p>
<A HREF="lp_solveAPIreference.htm">lp_solve API reference</A></p>
<p>
<b>See Also</b> <A HREF="delete_lp.htm">delete_lp</A>, <A HREF="free_lp.htm">free_lp</A>,
<A HREF="make_lp.htm">make_lp</A>, <A HREF="copy_lp.htm">copy_lp</A>, <A HREF="write_lp.htm">write_lp, write_LP, write_lpex</A>,
<A HREF="read_mps.htm">read_mps, read_freemps, read_MPS, read_freeMPS</A>, <A HREF="read_XLI.htm">read_XLI</A>, <A HREF="write_mps.htm">write_mps, write_freemps,
write_MPS, write_freeMPS, MPS_writefileex</A></p>
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