Simulating a queue model

[martial]

HI EVERYONE:

i'm trying to simulate the following program which is the implementation of a m/m/2/k queue system, and i've got some errors.Could someone help me to solve this problem?

the program is :

#include <stdio.h> // Needed for printf()
#include "smpl.h" // Needed for SMPL
#define K 10
//===== Main program ================================================== ========
void main(void)
{
real Ta = 200; // Mean interarrival time (seconds)
real Ts = 100; // Mean service time
real te = 1.0e6; // Total simulation time
int customer = 1; // Customer id (always '1' for this simulation)
int event; // Event (1 = arrival, 2 = request, 3 = completion)
int server; // Handle for server facility

// Initialize SMPL subsystem
smpl(0, "M/D/2/K Queue");

// Initialize server facility (single server)
server=facility("server", 2);

// Schedule arrival event at time 0 to kick-off simulation
schedule(1, 0.0, customer);

// Loop while simulation time is less than te
while (time() < te)
{
// "Cause" the next event on the event list
cause(&event,&customer);

// Process the event
switch(event)
{
case 1: // *** Arrival
if ((inq(server) + status(server)) < K)
schedule(2, 0.0, customer);
schedule(1, Ta, customer);
break;

case 2: // *** Request Server
if (request(server, customer, 0) == 0)
schedule(3, expntl(Ts), customer);
break;

case 3: // *** Release server
release(server, customer);
break;
}
}

// Output standard SMPL report
report();
}


The errors are:
md2k.obj : error LNK2001: unresolved external symbol "void __cdecl report(void)" (?report@@YAXXZ)
md2k.obj : error LNK2001: unresolved external symbol "void __cdecl release(int,int)" (?release@@YAXHH@Z)
md2k.obj : error LNK2001: unresolved external symbol "double __cdecl expntl(double)" (?expntl@@YANN@Z)
md2k.obj : error LNK2001: unresolved external symbol "int __cdecl request(int,int,int)" (?request@@YAHHHH@Z)
md2k.obj : error LNK2001: unresolved external symbol "int __cdecl status(int)" (?status@@YAHH@Z)
md2k.obj : error LNK2001: unresolved external symbol "int __cdecl inq(int)" (?inq@@YAHH@Z)
md2k.obj : error LNK2001: unresolved external symbol "void __cdecl cause(int *,int *)" (?cause@@YAXPAH0@Z)
md2k.obj : error LNK2001: unresolved external symbol "double __cdecl time(void)" (?time@@YANXZ)
md2k.obj : error LNK2001: unresolved external symbol "void __cdecl schedule(int,double,int)" (?schedule@@YAXHNH@Z)
md2k.obj : error LNK2001: unresolved external symbol "int __cdecl facility(char *,int)" (?facility@@YAHPADH@Z)
md2k.obj : error LNK2001: unresolved external symbol "void __cdecl smpl(int,char *)" (?smpl@@YAXHPAD@Z)
Debug/md2k.exe : fatal error LNK1120: 11 unresolved externals
Error executing link.exe.

md2k.exe - 12 error(s), 0 warning(s)

[Motoma]

The errors are:
md2k.obj : error LNK2001: unresolved external symbol "void __cdecl report(void)" (?report@@YAXXZ)
md2k.obj : error LNK2001: unresolved external symbol "void __cdecl release(int,int)" (?release@@YAXHH@Z)
md2k.obj : error LNK2001: unresolved external symbol "double __cdecl expntl(double)" (?expntl@@YANN@Z)
md2k.obj : error LNK2001: unresolved external symbol "int __cdecl request(int,int,int)" (?request@@YAHHHH@Z)
md2k.obj : error LNK2001: unresolved external symbol "int __cdecl status(int)" (?status@@YAHH@Z)
md2k.obj : error LNK2001: unresolved external symbol "int __cdecl inq(int)" (?inq@@YAHH@Z)
md2k.obj : error LNK2001: unresolved external symbol "void __cdecl cause(int *,int *)" (?cause@@YAXPAH0@Z)
md2k.obj : error LNK2001: unresolved external symbol "double __cdecl time(void)" (?time@@YANXZ)
md2k.obj : error LNK2001: unresolved external symbol "void __cdecl schedule(int,double,int)" (?schedule@@YAXHNH@Z)
md2k.obj : error LNK2001: unresolved external symbol "int __cdecl facility(char *,int)" (?facility@@YAHPADH@Z)
md2k.obj : error LNK2001: unresolved external symbol "void __cdecl smpl(int,char *)" (?smpl@@YAXHPAD@Z)
Debug/md2k.exe : fatal error LNK1120: 11 unresolved externals
Error executing link.exe.

It looks like the linker is having trouble finding the function calls you are making. Is there a .c or .cpp file that needs to be added to your project? Is there an external DLL which you need to link against?

[horace1]

you are including the SMPL header file smpl.h and calling the functions so you also need to compile and link the smpl library which is probably in a file smpl.c
If you don't have it you can download it from the link in the Simulation Tools section of
http://www.csee.usf.edu/~christen/tools/toolpage.html