Question

Input

No. of triangle : 5

Area of triangle 1: 12.00
Area of triangle 2: 14.14
Area of triangle 3: 14.00
Area of triangle 4: 7.31
Area of triangle 5: 17.32
Area of triangle 6: 14.14

Output:
Triangle 5 has the largest area: 17.32

If i have to save those area (input) into array form. How can i compare and find out which triangle with the largest area.

Answer 1

/*
 *  C++ Program to print the triangle with largest area
 */

#include <iostream>
using namespace std;

#define MAX 10

int main()
{
  float area, areaTriangle[MAX];

  int size;
  cout << "No. of triangle: ";
  cin >> size;

  for (int i = 0; i < size; i++)
  {
    cout << "Area of triangle " << (i+1) << ": ";
    cin >> area;
    areaTriangle[i] = area;
  }

  int maxAreaIndx = 0;

  for (int i  = 0; i < size; i++)
  {
    if (areaTriangle[maxAreaIndx] < areaTriangle[i])
    {
      maxAreaIndx = i;
    }
  }

  cout << "Triangle " << (maxAreaIndx + 1) << " has the largest area: " << areaTriangle[maxAreaIndx] << endl;

  return 0;
}