Question

1. Write a C++ program that reads sides of a triangle a, b and c from a file and computes the area of a triangle and counts total number of areas program has computed Program should have two functions sfun(): sfun receives the values of a, b and c then computes and returns the value ofs as areafun 0: areafun receives the value of s and computes and return the area of a triangle to main program using below formulae Sample input file Sample Output: TriangleSides Notepad File Edit Format View H Area of triangle 1 Area of triangle 2 8 Area of triangle 3 7 Area of triangle 4 7 Press any key to continue . . 7 5 2 6

Answer 1

#include<iostream>
#include<cmath>
using namespace std;

float sfun(float a, float b, float c) {
return (a+b+c)/2;
}

float areafun(float s, float a, float b, float c) {
return (sqrt(s*(s-a)*(s-b)*(s-c)));
}

int main()
{
   float a,b,c,s,Area;
   int tri, i=0;
   cout<<"\nEnter how many triangle values you want to calculate: ";
   cin>>tri;
   for(i=0; i<tri; i++) {
   cout<<"\nEnter three sides of triangle : ";
   cin>>a>>b>>c;
   s = sfun(a, b, c);
   Area= areafun(s, a, b, c);
   cout<<"Area of triangle "<<i+1<< " is : "<<Area;
   }
  
   return 0;
}