#include <iostream>
using namespace std;
/*method to calculate area of the triangle */
double area(double a,double b,double c){
double s=(a+b+c)/2; /*calculating s*/
/* calculating area */
double areaTriangle=s*(s-a)*(s-b)*(s-c);
return areaTriangle;/* returning area to main */
}
int main()
{double a,b,c;
/* Prompting user to enter 3 sides of the triangle */
cout << "Enter 1 side of the triangle : " <<
endl;
cin>>a;
cout << "Enter 2 side of the triangle : " <<
endl;
cin>>b;
cout << "Enter 3 side of the triangle : " <<
endl;
cin>>c;
/* calling area method and storing the returned result into
variable areaTriangle */
double areaTriangle=area(a,b,c);
/* printing area */
cout<<"The area of a triangle with sides
"<<a<<","<<b<<" and "<<c<<" is
"<<areaTriangle<<endl;
return 0;
}
/*******OUTPUT**********
Enter 1 side of the triangle :
3
Enter 2 side of the triangle :
4
Enter 3 side of the triangle :
5
The area of a triangle with sides 3,4 and 5 is 36
*******OUTPUT************/
/* Note: Please ask in case of any doubt,thanks */
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