@Samuel_Anjam:


Well, ofcourse it will always output 1.14937... when you call the function you dont send it the variables, you send it "1.0". (That, and you forgot the ".h" on iostream.h) (And a few other minor things)

Code:

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michael_calculation(1.0,1.0,1.0);
  should be 
michael_calculation(x,y,z);
 

---

Here is the corrected code...
Code:

---

#include <iostream.h>
#include <math.h>

void michael_calculation(double x, double y, double z)
{
	double temp = sqrt(x*x+y*y*cos(y)/sin(x)*z*z+y*y)/sqrt(2);
		cout << temp;
}
void main()
{
	double x = 0;
	double y = 0;
	double z = 0;
	cout << "Please enter a number for x: ";
	cin >> x;
	cout << "Please enter a number for y: ";
	cin >> y;
	cout << "Please enter a number for z: ";
	cin >> z;
	michael_calculation(x,y,z);
} 

---

The new code will now return different results based on user input. Not quite sure if this now makes it 'useful' or not though.

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Cheers,
AMan