C++ Program for Modified Euler’s Method to solve an ODE

//Modified Euler's Method for differential equations
using namespace std;
double df(double x, double y)
    double a=x+y;            //function for defining dy/dx
    return a;
int main()
    double x0,y0,x,y_i,dy1,dy2,dy_avg,y_n,h;    //for initial values, width, etc.
    cout<<"\nEnter the initial values of x and y respectively:\n";
    cin>>x0>>y0;                    //Initial values
    cout<<"\nEnter the value of x for which you would like to find y:\n";
    cout<<"\nEnter the interval width,h:\n";
    cin>>h;                        //input width
    cout<<"x"<0.0000001      //I couldn't just write "while(x0


Explaination of the code:

PhD researcher at Friedrich-Schiller University Jena, Germany. I'm a physicist specializing in theoretical, computational and experimental condensed matter physics. I like to develop Physics related apps and softwares from time to time. Can code in most of the popular languages. Like to share my knowledge in Physics and applications using this Blog and a YouTube channel.
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