# found a given number is positive or negative in C++

In this page we will discuss to find a given number is negative or positive

But question is,

How do we know whether a number is negative or positive.?

as we know

`-3 -2 -1 0 1 2 3`

means, All negative numbers are less than 0 while all positive numbers greater than 0, so here we can make two condition such as,

for find out negative number

`(number<0)`

for find out positive number

`(number>0)`

But we know zero is neither negative nor positive.So here we will add another one condition to these conditions.

for zero

`(number==0)`

Now we have three conditions, but we can use any two of these conditions.

Here is the program,

```#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int number;

cout<<"Enter number:";
cin>>number;

cout<<endl;

if(number<0)
cout<<"given number is negative";

else if(number>0)
cout<<"given number is positive";

else
cout<<"given number neither negative nor positive";

getch();
}```

explanation:

In the program, a variable number is declared,

`int number;`

In which user-input will be stored.

The program has been executed twice.

1st execution:-

suppose user entered value 6 so,

`number = 6`

after value entered, In if-statement condition will be checked. such as,

`(number < 0 )`

means,

`6 < 0 `

because here, the condition becoming false , so body of if will be skip and execution will be go the
next statement

After this, condition will also be checked in else-if statement

`(number > 0)`

means,

`6 > 0`

here, the condition is becoming true so else-if body will be printed,

thus program terminate successfully,

2nd execution

here user entered value -6 so,

`number = -6`

after value entered, In if-statement condition will be checked. such as,

`(number < 0)`

means,

`-6 < 0 `

here the condition is becoming true so body of if will be printed,

thus program terminate successfully,

here we can also use condition in else-statement such as,

```else if(number==0)
cout<<"given number neigther negative nor positive";```