[R] Help plz to fix it

[Rlotus]

I have an array of probabilities....it is p. So if user types x=1 then
probability is p1=1/10. 
If user types x=2 it means that p2= p1+p2
if user types x=3 it means that p3=p1+p2+p3....and so on.
So i created a code..... but it doesnt work properly. Help me plz to fix it)
Thank u in advance.

psidp=function(x){
  p<-(1/10 2/5 2/5 2/5 2/5 1/10 1/10 1/10 1/10 1/10)
   i==0;
   if (x!=0){ 
   	for (i in 1 to x)
   	{p[i]=p[i]+p[i-1]
   	p[i]
   		}

}
   	
   	   	   	
   		




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