20 points) Using user defined functions and pointers, find the area and perimeter of an equilateral triangle. An equilateral triangle has three equal sides and three equal angles. Area of any triangle is *base*height. Perimeter of any triangle is the sum of the lengths of the three sides.

Your program must use the user defined function information and pointers as described

void triangle(double s, double *ptrA, double *ptrP);

triangle(side, &area, &perimeter);

void triangle(double s, double *ptrA, double *ptrP){

//calculations here

return;

}

Your program must print out the side entered, the area, the perimeter and the addresses of ptrA and ptrB.