Area Of Triangle

#include<stdio.h>
#include<math.h>
int main()
{
float a,b,c,s,t;char ch;
printf("Enter 1st side = ");
scanf("%f",&a);
printf("Enter 2nd side = ");
scanf("%f",&b);
printf("Enter 3rd side = ");
scanf("%f",&c);
s=(a+b+c)/2;
t=pow((s*(s-a)*(s-b)*(s-c)),(.5));
printf("\n\n\n.................................ANSWER........................................ \n\n\nArea is = %f\n\n\n\n\n\n\n\n\nEnter To Exit",t);
getch();
}