Método de Euler I

#include <stdio.h>
#include <math.h>

#define N 100
#define v0 1
#define dt 1e-3

#define x0 0
#define t0 0

int main(void)
{
    double x = x0, t = t0;
    int i;

    for (i = 0; i < N; ++i)
    {
        x += v0*dt;
        t += dt;
        printf("%d %f %f\n", i, t, x);
    }
}