Determining whether a triangle, a triangle area, and the radius of inscribed circle and outside triangle area

#include "stdio.h"
#include "math.h"
#define PI 3.1415926
void main ()
{
a float A, B, C, S, Area;
the printf ( "Enter three sides of the triangle:");
Scanf ( " % F,% F,% F ", & A, & B, & C);
IF ((A + B)> C && (A + C)> B && (B + C)> A)
{
the printf (" triangular \ n " );
S = (A + B + C) / 2;
area = sqrt (S * (SA) * (SB) * (SC));
the printf ( "area% = - 8.5F \ n-", area);
the printf ( "maximum inscribed circle radius% = - 8.5F \ n-", area / S);
the printf ( "maximum inscribed circle area =% - 8.5f \ n", (area / s) * (area / s) * PI);
the printf ( "minimum circumscribed circle radius =% - 8.5f \ n", A * B * C / (area *. 4));
the printf ( "minimum circumscribed circle area =% - 8.5f \ n", (A * B * C / (Area *. 4)) * (A * B * C / (Area *. 4)) * PI);
}
the else
the printf ( "triangle is not");

}