Question

I’m not sure how to pass on the variables from main() to another function.
I have something like this:

main()
{
  float a, b, c;

  printf("Enter the values of 'a','b' and 'c':");
  scanf("%f %f %f",&a,&b,&c);
}

double my_function(float a,float b,float c)
{
  double d;

      d=a+b+c
      bla bla bla bla

How can I pass a, b and c from main to my_function? For now the program stops on scanf() and finishes straight after I put my values in.

I’ve seen different examples here but they didn’t help me much.

Answer 1

Just call the function by passing the parameters a, b, and c. Syntax:

retval = function_name(parameter1,parameter2,parameter3); //pass parameters as required

Like this:

int main(void)
{
    float a, b, c;
    double d;

    printf("Enter the values of 'a','b' and 'c': ");
    if (scanf("%f %f %f",&a,&b,&c) == 3)
    {
        d = my_function(a, b, c);
        printf("Result: %f\n", d);
    }
    else
        printf("Oops: I didn't understand what you typed\n");      
}