#include<stdio.h>
#include<conio.h>

int main()
{
	char c;
	unsigned char u;
	signed int a;
	unsigned int b;
	clrscr();

		c=u=837;
		printf("%c,%c",c,u);
			for(a=0;a<1;a--);
				printf("\n%d,%u",a,a);
			for(b=0;b<1;b--);
				printf("\n%d,%u",b,b);
   return 0;
}