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#include<stdio.h>
#include<conio.h>
void binary(int);
int main()
{
	int n;
	printf("Enter a number: ");
	scanf("%d",&n);
	printf("\n The hex equivalent is %x",n);
	printf("\n The octal equivalent is %o",n);
	printf("\n The binary equivalent is :");
	binary(n);
	printf("\n The 1's complement is :");
	binary(-n-1);
	printf("\n The 2's complement is :");
	binary(-n);
	return 0;
}

void binary(int a)
{
	int i,k;
	for(i=3;i>=0;i--)
	{
		k=(a>>i)&1;
		printf("%d",k);
	}
}