Help me to run this.
using System;
using System.Collections.Generic;
using System.Text;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args);
int Heron(int a, int b, int c)
{
int p=(a+b+c)/2;
return sqrt(p*(p-a)*(p-b)*(p-c));
}
int main()
{
int a,b,c;
Console.WriteLine << " a: ";
Console.ReadLine >> a;
Console.WriteLine << " b: ";
Console.ReadLine >> b;
Console.WriteLine << " c: ";
Console.ReadLine >> c;
if(a<=0 || b<=0 || c<=0){
Console.WriteLine << " All values must be great from 0!\n";
system("pause");
return 1;
}
if(!(c<a+b) || !(a<b+c) || !(b<a+c))
{
Console.WriteLine << "Triangle no exist!\n";
system("pause");
return 1;
}
else
{
Console.WriteLine << "area triangle = " << Heron(a,b,c) << endl;
system("pause");
return 0;
}
}