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Hey friends, welcome back to Simplified
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by Singum. Welcome to our Python
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beginner series. So in today's exercise,
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it is super interesting because we are
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going to write a Python program that
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finds the largest value among the
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numbers. And this is exercise six. And
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trust me, by the end of this video, you
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will not only know how to solve this
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problem, but also understand the
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stepbystep flowchart of how Python makes
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So before we jump into code, let's look
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at the flowchart because flowcharts help
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us visualize the logic like a road map.
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And here we start with taking three
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inputs A, B and C. And first we compare
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A with B. If A is greater than B, then
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we check if A is greater than C.
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If yes then we say that A is the largest
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or else we say that the C is the largest
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but if it's not A greater than B then we
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compare B and C then if B greater than C
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then we display B else we display C and
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then we end the program. Simple right?
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Step by step we eliminate until we find
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Now let's write this in Python. Always
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Enter the first number.
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Enter the second number.
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enter the third number.
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Obviously here we are doing mathematical
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calculations. So I will do it float. You
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can give int. It's your choice but I'm
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Now we check the conditions based on the
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So if you observe the flowchart, if a is
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greater than b, then you check if a is
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greater than c. Right? Okay.
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So if a is greater than b
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if a is greater than c now you check
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whether a is greater than c or not. If a
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is greater than c then you will just
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create a variable called largest and you
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store a here. Else you store
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If a is greater than b is false then you
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will check b greater than c. So if b is
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greater than c you display b else you
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display c. So if b greater than c
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and then you will just print the
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largest number. So print
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the largest number is
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Okay. And now let's check by giving the
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inputs. So maybe a value is 10 and b
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is maybe 12. Okay. So now a value is 10,
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b value is 7 and c value is 12. So is 10
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greater than 7? Is 10 greater than 7?
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True. And now it goes here. Is 10
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greater than 12? Is 10 greater than 12?
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No, this is false. Actually here it will
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be C. That is why tracing is really
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Now the computer goes to the else part
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and obviously if A is greater than C is
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false then the largest will be C. So
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that is what we are printing here.
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So the largest will be C. So this is how
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you have to trace by giving the numbers
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by giving some conditions. What if A is
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greater than B? What if B is greater
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than A and C and what if C is greater
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than A and B. So if you give multiple
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conditions and multiple cases then you
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will understand the you know up to what
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extent you have to solve a particular
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problem or up to what extent you have to
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write a code to solve that particular
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problem once again. So let's break this
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down briefly. So first we take three
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inputs from the user and we are
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converting them to floats. So we can
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and then comes to the logic. If a is
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greater than b then python checks if a
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is greater than c. If yes then the
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largest will be a else the c will be the
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bigger. But what if a is not greater
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than b. So now the computer goes to else
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part and it will compare b with c. If B
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is greater than C, then the largest will
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be B. Otherwise, C will be the largest.
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Finally, we printed the result. And
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let's test it quickly.
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What if the first number is 10 and the
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second number is 25 and the third number
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The largest is 25. Good job.
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And also in order to handle the
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the inside the brackets
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So it is handling decimals perfectly. So
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that's really an awesome job. And you
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just learned how to compare three
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numbers step by step in Python. Always
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always try to visualize before coding.
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And if you found this video helpful, do
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me a small favor. Hit that like button,
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share it with a friend who is learning
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Python, and most importantly, subscribe
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to this channel so you don't miss the
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next exercise because trust me, every
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video takes you one step closer to
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becoming a confident Python programmer.
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See you in the next one and until then,
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keep coding and keep growing.
