[bouazza]

Hello all,
I am trying to write my C program Of the form UDF and import them as a source term
the program calculates the electric force of a wire subjected to the high tension
How do I declare functions and call them
an example

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

double c,a,b;
void f1()
{
a=2;
}

void f2()
{
b=5;
}

int main()
{
f1();
f2();
c=a+b;
printf("c=%e ",c);
}

Help pls! :P