bst runtime error plz ny1 cn help me

general
1 
#include<stdio.h>
#include<conio.h>
struct s
{
int i;
	struct s *q,*w,*e;
};
main()
{
	struct s *r,*t,*y;
	int j=0,a;
	while(1)
	{
		//printf("qwereqr");
		scanf("%d",&a);
		if(a!=123)
		{
			//printf("\nqwereqr1");
		if(j==0)
		{
			t=malloc(sizeof((struct s*)r));
			t->i=a;
			t->q=t->w=t->e=NULL;
			printf("r=%d ",t->i);
			j++;
		}
		else
		{
			y=t;
			while(y!=NULL)
			{
			///	printf("\nqwereqr2");
				r=y;
				if(a>(y->i))
				    y=y->w;
				else
				y=y->q;
			}
			y=malloc(sizeof((struct s*)y));
				if(r->i<a)
				{
					r->w=y;
					r->w->i=a;
					r->w->q=r->w->w=NULL;
					r->w->e=r;
					printf("ri=%d ",r->w->i);
				}
				else
				{
					r->q=y;
					r->q->i=a;
					r->q->q=r->q->w=NULL;
					r->q->e=r;
					printf("l=%d ",r->q->i);
				}
				
			}
		}
		else
		break;
		}	
					}
2

Your code is highly unreadable. Please put in proper blocks or give the ideone link.

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