0:01
Hey friends, welcome back to simplified
0:03
by singingum. Welcome to our Python
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journey. So far we have learned how to
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find the largest numbers and even we
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worked with leap years in the previous
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exercise as well and we have covered few
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important Python basics till now. So now
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we are working on exercises so that you
0:21
guys can get more use of the basics that
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we have learned before. So in exercise
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three, we are going to write a program
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to check if a number is positive,
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negative or zero. It sounds simple, but
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trust me, this exercise will help you
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build a strong foundation in using if
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else conditions. And let's go step by
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step. Always try to work on flowchart
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before solving a problem because a
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flowchart helps us to understand the
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path the program should follow. So if
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the number is greater than zero it's
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positive and if the number is less than
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zero then it's negative. It's as simple
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as that. You will start the program you
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will get the number you will check
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whether it is greater than zero or not.
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If it is greater than zero then this
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will be true then it will print that the
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number is positive. Else it will print
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that the number is negative and then it
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comes out of the loop.
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Okay let's start then. So always get
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number equal to input
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and now you'll be getting a doubt called
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whether I have to take integer or float
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to observe these use cases here they
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used integer and they also used float so
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I think it's better to take float
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check the conditions.
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the number is positive.
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the number is negative.
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And what if the number is zero? What if
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the number equal to zero? If you check
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this condition, you also have to show
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them that a number is zero. So it's very
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simple. You just have to add l if
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equal to zero then just print
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So let's break this down slowly. So even
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if you're coding for the first time,
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you'll get it for sure. So first we ask
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the user to enter a number. And I used
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float. So we can check both integers and
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even decimals. And then we used if else
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structure. If the number is greater than
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zero then you will print the number is
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positive. If the number is zero then you
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will just say the number is zero. Else
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obviously the number will be negative so
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the number is negative.
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And that's it. Python makes it super
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simple. And let's run the program and
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Enter a number. Maybe seven.
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The number is positive. Okay. Let's give
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and enter a number - 3.14.
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The number is negative. Okay.
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Enter number zero. The number is zero.
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Works perfectly in all cases. It's as
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simple as that. If it is greater than
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zero, then this condition will be
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executed. If the number is zero, then
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this condition. Else the number is
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negative. And that's how you check
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whether a number is positive, negative
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or zero in Python. And the key takeaway
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here is always break your problem into
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small conditions. And flowcharts are
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like your road map. They make coding
4:52
much easier. If you found this
4:54
explanation simple and clear, then don't
4:57
forget to do two small favors for me.
5:00
One is to hit that subscribe button so
5:02
you don't miss the next exercise. And
5:05
also give this video a like because your
5:08
support motivates me to bring you more
5:10
beginner friendly coding lessons. And
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also remember, every line of code you
5:15
write takes you one step closer to
5:17
becoming a confident programmer. Keep
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practicing. Stay curious. And I'll see
