The program was run for a number of different initial conditions (different \(x\left ( 0\right ) \) and different \(v\left ( 0\right ) \)). In all cases, \(c=1,k=1\) was used. It is noticed that one limit cycle is reached in all cases. Both the \(x\left ( t\right ) \) and the phase plot where shown. The following are output from 3 different runs made. The title on the plots show the initial conditions used.