[mtm]

اعتقد هذا هو الحل الصحيح

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

double dist (double xa ,double xb , double ya , double yb )
{
	double dist;
	   dist = sqrt ((xa-xb)*(xa-xb) + (ya-yb)*(ya-yb));
	   return dist;
}
double area(double width ,double high)
{
    return((width *high)/2);
}
int main ()
{ 
    double xa,xb,ya,yb;
    double width,high;
    
    printf(" enter XA= ");
    scanf("%lf",&xa);
    printf(" enter XB= ");
    scanf("%lf",&xb);
    printf(" enter YA= ");
    scanf("%lf",&ya);
    printf(" enter YB= ");
    scanf("%lf",&yb);
    printf("dist = %1f\n\n",dist (xa,xb,ya,yb));
    printf(" enter WIDTH= ");
    scanf("%lf" ,&width);
    printf(" enter HIGH= " );
    scanf("%lf",&high);
    printf("area= %1f\n\n",area (width,high));
    return(0);
}