C Programming: area of triangle

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Q-5: Write a program to find area of a triangle: Area of triangle = sqrt[s(s-a)(s-b)(s-c)] where a,b, and c are three sides of the triangle and s=a+b+c/2.
#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
                double s,a,b,c,aot;

                clrscr();
                printf("### Area Of Triangle ###\n");
                printf("\nENTER THE VALUE FOR a:");
                scanf("%lf",&a);
                printf("\nENTER THE VALUE FOR b:");
                scanf("%lf",&b);
                printf("\nENTER THE VALUE FOR c:");
                scanf("%lf",&c);

                                s=(a+b+c)/2;
                printf("\nS=%lf",s);

                                aot=sqrt(s*(s-a)*(s-b)*(s-c));
                printf("\nAREA OF TRIANGLE:%lf",aot);

                getch();

}

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