Calculated triangle area-CodePudding

Why is this so? Where there is a mistake?

#include
#include
#include
using namespace std;
Int main ()
{
Float xa, ya, xb, yb, xc, yc, a, b, c, p, s;
cin> Xa & gt;> Ya & gt;> Xb & gt;> Yb & gt;> Xc & gt;> Yc.
A=SQRT ((xb - xa) * (xb - xa) + (yb - ya) * (yb - ya));
B=SQRT ((xc - xb) * (xc - xb) + (yc - yb) * (yc - yb));
C=SQRT ((xc - xa) * (xc - xa) + (yc - ya) * (yc - ya));
P=(a + b + c)/2;
S=SQRT (p * (p - a) * (p - b) * (p - c));
Cout & lt; & lt; Fixed & lt; & lt; Setprecision (2);
Cout & lt; & lt; s;
}

CodePudding user response:

Using a double instead of float

CodePudding user response:

Will float (single) replaced by double (double fine)

 # include & lt; Iostream> 
#include  
#include  
using namespace std; 
Int main () 
{
Double xa, ya, xb, yb, xc, yc, a, b, c, p, s; 
cin> Xa & gt;> Ya & gt;> Xb & gt;> Yb & gt;> Xc & gt;> Yc. 
A=SQRT ((xb - xa) * (xb - xa) + (yb - ya) * (yb - ya)); 
B=SQRT ((xc - xb) * (xc - xb) + (yc - yb) * (yc - yb)); 
C=SQRT ((xc - xa) * (xc - xa) + (yc - ya) * (yc - ya)); 
P=(a + b + c)/2; 
S=SQRT (p * (p - a) * (p - b) * (p - c)); 
Cout & lt; & lt; Fixed & lt; & lt; Setprecision (2); 
Cout & lt; & lt; s; 
}