Area Under Curve

Exercise:

The c++ programming:

#include <iostream>

#include <fstream>

int main()

{

    char c;

    std::fstream File("AUC data.csv");

    double arr_x[351];

    double arr_y[351];

    double AUC = 0.0;

    for (int i = 0; i < 351; i++)

    {

     File >> arr_x[i] >> c >> arr_y[i];

    }

    for (int i = 0; i < 350; i++)

    {

        AUC += (arr_y[i] + arr_y[i + 1])*(arr_x[i+1] - arr_x[i])/2;

    }

    std::cout << "The area under curve using trapezoidal rule is: " <<AUC << std::endl;

    std::cin.get();

    return 0;

}

Output:

The area under curve using trapezoidal rule is: 0