Thread: error here can anyone help

the question is
Construct a class named Coord that contain two floating –point data member named xval and yval , which will be used to store the x and y values of a point in rectangular coordinates. The function member should include appropriate constructor and display functions and friend function named conv_pol (). The conv_pol() function should accept two floating point member that represent a point in polar coordinates and convert them into rectangular coordinates .
and here's my coding..

Code:

#include<iostream>
#include<cmath>
using namespace std;
 


class Coord

{
	friend Coord conv_pol( float ,float);
private:
float xval;
float yval;

public:
	void print();

	Coord(float,float);


};

Coord::Coord(float x,float y)
{
	xval = x;
	yval = y;
}


void Coord::print()
{
	cout<<'('<<xval<<','<<yval<<')'<<endl;
}

Coord conv_pol(float x,float y)
{ 
   Coord temp;
   temp.xval = temp.yval*cos(temp.yval*3.142 /180);
   temp.yval = temp.yval*sin(temp.yval*3.142 /180);
   return temp;
 
}
int main()
{
	Coord a;
	a=conv_pol(10,210);
	a.print();


 return 0;
}

the error says no appropriate default constructor not initialized but then.. have already done Coord(float,float) which is the default constructor..
i am confused on how to edit the constructor here..
so what do i have to do??