PROGRAM-1:
Check if a number is positive or negative using if...else
#include <stdio.h>
int main()
{
double number;
printf("Enter a number: ");
scanf("%lf", &number);
if (number <= 0.0)
{
if (number == 0.0)
printf("You entered 0.");
else
printf("You entered a negative number.");
}
else
printf("You entered a positive number.");
return 0;
}
PROGRAM-2:
Check if a number is positive or negative using nested if...else
#include <stdio.h>
int main()
{
double number;
printf("Enter a number: ");
scanf("%lf", &number);
if (number < 0.0)
printf("You entered a negative number.");
else if ( number > 0.0)
printf("You entered a positive number.");
else
printf("You entered 0.");
return 0;
}
OUTPUT-1:
Enter a number: 12.3
You entered a positive number.
OUTPUT-2:
Enter a number: 0
You entered 0.
