Prog#135: copy an array into another

/*
copy an array into another
Program#135
*/
#include<stdio.h>
main()
{
int i;
char a[50], b[50];
for(i=0,a[i]=getchar();a[i]='$';a[++i]=getchar());
a[i]='\0';
for(i=0;a[i]!='\0';i++)
b[i]=a[i];
b[i]='\0';
puts (a);
puts (b);
}