Thread: Conversion error

Code:

#include <stdio.h>
#include <math.h>

float Area(float);
float Circumference(float);

int main ( void )

{
	float radius;
	
	float refA;
	float refC;

	printf("Enter a radius of a circle\n");
	scanf ("%f", &radius);

	refA = Area(radius);
	refC = Circumference(radius);

	printf("\nThe Area of the circle is %.2f\n", refA);

	printf("\nThe Circumference of the circle is %.2f\n", refC);

	return 0;
}

float Area(float radius)

{
	return (float) pow(radius, 2) * 3.14;
}

float Circumference(float radius)

{
	return (float) 2 * radius * 3.14;
}

Why does my compiler display a conversion warning for...

Code:

return (float) pow(radius, 2) * 3.14;

and...

Code:

return (float) 2 * radius * 3.14;

Thank you.