Scop rule of function

Scop rule of function:

#include<stdio.h>
#include<conio.h>
void scop(int);
void main()
{
int i=20;
clrscr();
scop(i);
getch();
}
void scop(int j)
{
int k=36;
printf("\n%d",j);
printf("\n%d",k);
}

Output: