#include <stdio.h>
/* Getting a number and checking for the sign */
int CheckSign()
{
 int x;
scanf(“%d” , &x);
 if (x>=0) // x is positive.
 return 1;
else // x is negative.
 return 0;
}
/* Print a positive number message */
void PrintPos()
{
printf(“It’s a Positive Number.\n”);
}
/* Print a negative number message */
void PrintNeg()
{
 printf(”It’s a negative number.\n”);
}
int main()
{
int a;
printf(“Please enter a positive number: \n”);
a = CheckSign();
if (a==1)
{
 PrintPos();
 printf(”\n Great !\n”);
}
else
{
 PrintNeg();
 printf(“\n Try next time.\n”);
}
return 0;