Is statement

#include<iostream.h>
#include<conio.h>
 void main()
 {
 clrscr();
 int l,a,p=0,n=0,z=0;
 for(l=1;l<=10;l++)
 {
 cout<<"\nenter nos.";
 cin>>a;
 if(a>0)
 p=p+1;
 else if(a<0)
 n=n+1;
 else
 z=z+1;
 }
 cout<<"\npositive no's are="<<p;
 cout<<"\nnegative no's are="<<n;
 cout<<"\nzero no's are="<<z;
 getch();
 }