How can we call a C program in Labview

[R_J]

Hi

a) In one of our application we have to call a C progran in Labview. I am not able to call it. Can somebody help me.

b) When we call a C program ,is  Labview makes block diagram for it.

Please reply

Thanking You

[chrisger]

hi there,

to execute applications (*.exe) you can use the "System Exec.vi". You can found it in the Communications - palette. to call dlls functions use the "Call library function node" in the Advanced - palette. See the only help for more information or read the "Using external code in LabVIEW" manual.

LabVIEW won't create any diagrams out of compiled Code.

[R_J]

Hi chrisger

I am not able to call C program in LabVIEW. Please send an example by which i can learn how to call a C program.

It is very urgent.

Thanxs

[chrisger]

hi there

well, then we need more information what you mean with a "C program". are you talking about C source code, a command line executable, a high end executable with a GUI, a dll, ActiveX.... what are the parameters you have to pass? what parameters are returned from the "C program"? please post some code....

as a startup you could search the examples shipped with LV. open the example finder from the runtime menu.

[R_J]

Hi

thanxs for quick reply.

Actually my senior (he does not Labview) wants me to Call a C program (any simple program say C program for the addition of two numbers) in labview . He just wants to check how  i am calling a C program. Till now i am not able to call .

please reply as soon as possible

[chrisger]

please post that c programm

[R_J]

plz find the attached code.

I copied it in Notepad.

[chrisger]

well, first you have to compile this code and generate an executable. then call this executable with the "System Exec vi". see online documentation of "System Exec vi" for more information.

[Dennis_Knutson]

The other option is to create a dll from the c code and call it with the Call Library Function Node.

[chrisger]

dennis is right, a dll gives you much better options for parameter passing than System Exec.vi