function square

[Player]

Hi,
I'm beginner and have problems by using function square from math.h

Compajler:
Borland C++ 5.5.1 for Win32

Code:

#include <iostream.h>
#include <math.h>
int main() {
float r,k,x,y,z;
//long z;
cout <<"Enter x:";
cin >> x;
cout << "Enter y:";
cin >> y;
if (abs(x) != abs(y)) {
cout << "Enter r:";
cin >> r;
cout << "Enter k:";
cin >> k;
z = (square(r) * k) / (square(x) - square(y));
cout << "Rezults: " << z << endl;
}
else {
cout << "Funkcija nije definisana za date vrijednosti x i y \n";
return 0;
}
}

Compile Error:
Error E2268 Call to undefined function 'square'in function main()


Where I'm wrong?

 

[John Harrison]

Hi,
I'm beginner and have problems by using function square from math.h

Compajler:
Borland C++ 5.5.1 for Win32

Code:

#include <iostream.h>
#include <math.h>
int main() {
float r,k,x,y,z;
//long z;
cout <<"Enter x:";
cin >> x;
cout << "Enter y:";
cin >> y;
if (abs(x) != abs(y)) {
cout << "Enter r:";
cin >> r;
cout << "Enter k:";
cin >> k;
z = (square(r) * k) / (square(x) - square(y));
cout << "Rezults: " << z << endl;
}
else {
cout << "Funkcija nije definisana za date vrijednosti x i y \n";
return 0;
}
}

Compile Error:
Error E2268 Call to undefined function 'square'in function main()


Where I'm wrong?

There is no function square in math.h. Who told you that there was?

It's not hard to write you own of course.

john

 

[osmium]

I'm beginner and have problems by using function square from math.h

Compajler:
Borland C++ 5.5.1 for Win32

Code:

#include <iostream.h>
#include <math.h>
int main() {
float r,k,x,y,z;
file://long z;
cout <<"Enter x:";
cin >> x;
cout << "Enter y:";
cin >> y;
if (abs(x) != abs(y)) {
cout << "Enter r:";
cin >> r;
cout << "Enter k:";
cin >> k;
z = (square(r) * k) / (square(x) - square(y));
cout << "Rezults: " << z << endl;
}
else {
cout << "Funkcija nije definisana za date vrijednosti x i y \n";
return 0;
}
}

Compile Error:
Error E2268 Call to undefined function 'square'in function main()


Where I'm wrong?

There is no function square in <math.h> and you didn't provide a prototype
for one, either. The compiler correctly concluded that it had no such
function. Use your editor and examine math.h. The usual way to get a
square is x*x.

 

[Tuyen Do]

You may need the function "pow" in "math.h".

[
double pow(double x, double y);
]
Calculates x to the power of y.






T. Do

 

[Mike Wahler]

Hi,
I'm beginner and have problems by using function square from math.h

There is no function called 'square' in the
C standard library. But of course it's simple
to write one.

Compajler:
Borland C++ 5.5.1 for Win32

Code:

#include <iostream.h>

#include <math.h>

template <typename T>
T square(const T& value)
{
return value * value;
}

int main() {
float r,k,x,y,z;
file://long z;
cout <<"Enter x:";
cin >> x;

-Mike