C PROGRAM TO CHECK WHETHER A NUMBER IS POSITIVE OR NEGATIVE

C PROGRAM TO CHECK WHETHER A NUMBER IS POSITIVE OR NEGATIVE

This program takes a number from user and checks whether that number is either positive or negative

The output of program should be as follows:

Output 1:

Enter a number: 12.3 

12.30 is positive.

OUTPUT2:

Enter a number: -12.3

-12.30 is negative.

Output 1:

Enter a number: 0 

You entered zero.

SOURCE CODE

#include<stdio.h>

#include<conio.h>

void main()

{

clrscr();

void main()

{

 float num;

 printf("Enter a number: ");

 scanf("%f",&num);

 if (num<=0)

 {

 if (num==0)

printf("You entered zero.");

 else

 printf("%f is negative.",num);

 }

 else

 printf("%f is positive.",num);

getch();

}

This program can also be solved using else if statement

/* C programming code to check whether a number is negative or positive or zero using nested if...else statement. */

 #include<stdio.h>

#include<conio.h>

void main()

{

clrscr();

void main()

{

 float num;

 printf("Enter a number: ");

 scanf("%f",&num);

 if (num<0) /* Checking whether num is less than 0*/

 printf("%f is negative.",num);

 else if (num>0) /* Checking whether num is greater than zero*/

 printf("%f is positive.",num);

else

printf("You entered zero.");

getch();

}