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#include "example.h"
#define M_PI 3.14159265358979323846
/* Move the shape to a new location */
void Shape::move(double dx, double dy) {
x += dx;
y += dy;
}
int Shape::nshapes = 0;
double Circle::area(void) {
/* return -1 is to test post-assertion */
if (radius == 1)
return -1;
return M_PI*radius*radius;
}
double Circle::perimeter(void) {
return 2*M_PI*radius;
}
double Square::area(void) {
return width*width;
}
double Square::perimeter(void) {
return 4*width;
}
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