123123

public static void euler(double n){
		double coelhos=520, raposas=85;
		float a11=5;
		double h=0.1;
		double a12=0.05;
		double a21=0.0004;
		double a22=0.2;
		double xC0=(a11*coelhos)-(a12*coelhos*raposas);
		double xR0=(a21*coelhos*raposas)-(a22*raposas);
		int i=0;
		double xC=0, xR=0;
		while (i!=n){
			if(i == 0){
				xC=xC0 + xC0*h;
				xR=xR0 + xR0*h;
			}
			else{
				xC = xC + (a11*xC - a12*xC*xR)*h;
				xR = xR + (a21*xC*xR - a22*xR)*h;
			}

			System.out.printf("%d : %f , %f\n",i,xC,xR);
			i++;
		}
    }