help with this would meen alot

[Daniel Jenkins]

Hi guys. I'm revising for an exam i have in a few weeks. I'm an electrical engineer and i struggle a fair bit with C programming. This question has popped up on a few of the past exams, so it may come up again. It asks for code to be inserted so that the outcome displays "x" for the user. I have no idea how to do it, even after scouring my notes. Any help would be greatly appreciated. thanks

struct Complex {float real; float imaginary;}; 
            struct Complex Add(struct Complex a, struct Complex b);
            void main()
            {                   struct Complex a,b,x;
                                a.real=10;
                                a.imaginary=10;
                                b.real=30;
                                b.imaginary=40;
                                x=Multiply(a,b);

                               /// add code here to display x for the user                 }***
 
            struct Complex Multiply(struct Complex a, struct Complex b)
                                {                   
                                 struct Complex c;   
                                c.real=a.real*b.real- a.imaginary*b.imaginary;
                                c.imaginary= a.real* b.imaginary + a.imaginary *b.real;
                                return (c);                                        
                                 }

[dmh2000]

use something like printf("real:%f imag:%f\n",x.real,x.imaginary);

[jimblumberg]

First main() should be defined to return an int and you should return an int from this function.

Second you are missing the closing brace for the function main:

int main
{

   return(0);
}

Next would a simple printf() satisfy the objectives?

Jim

[gemera]

It's a duff question. The prototype is for an Add function instead of the presented Multiply.