C++ Program for Euler’s Method to solve an ODE(Ordinary Differential Equation)

//Eulers Method to solve a differential equation
using namespace std;
double df(double x, double y)            //function for defining dy/dx
    double a=x+y;                //dy/dx=x+y
    return a;
int main()
    int n;   
    double x0,y0,x,y,h;            //for initial values, width, etc.
    cout.precision(5);            //for precision
    cout<<"\nEnter the initial values of x and y respectively:\n";        //Initial values
    cout<<"\nFor what value of x do you want to find the value of y\n";   
    cout<<"\nEnter the width of the sub-interval:\n";            //input width
    cout<<"x"<0.0000001)        //I couldn't just write "while(x0

For dy/dx=-2x-y
euler 2 output
For dy/dx=x+y

Explanation of the Code:

PhD researcher at Friedrich-Schiller University Jena, Germany. I'm a physicist specializing in computational material science. I write efficient codes for simulating light-matter interactions at atomic scales. I like to develop Physics, DFT and Machine Learning 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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3 thoughts on “C++ Program for Euler’s Method to solve an ODE(Ordinary Differential Equation)

  1. Hello
    My son teacher have told them to program a program in C++ which can solve non-homogenous problems in differential eq. I tried best to teach him but couldnt solve it

    Can i have a program or tutorial?

  2. Hey ! Do you work as a freelancer? I need help with a project. Send me your email.

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