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Python 3 Program to Add Two Numbers Using While Loop in Terminal Tutorial For Complete Beginners
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Jun 1, 2025
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0:00
uh hello guys welcome to this video so
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in this video I will show you how to add
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two numbers inside Python uh using while
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loop loops are very much important if
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you are going for a job this question
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might be asked for you it's a
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competitive
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question
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so specifically we are talking about
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while loop so let me show you the
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program here so we actually declare the
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variables
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let me take a is equal to 10 b is equal
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to 5 we have declared two variables
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which we will be adding we will not be
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adding directly 10 + 5 we will not be
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using
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this directly instead we'll be using the
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while loop for this we need two separate
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variables first variable where we'll be
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storing the sum so this will be zero sum
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is equal to zero and also specifically
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for this process we need one more
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variable which is for keep on checking
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that uh whether the value is increased
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or decreased so for this we need this
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counter variable so for this approach we
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need two more extra variables here one
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more extra variable which is counter so
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now let me show you how this process
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works so the way by which we use while
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loop is we use the while keyword and
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here we simply compare the value of
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counter if the counter variable is
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smaller than the value of
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b and what we will do here we will
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increment the value of we can also write
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like this sum plus equal to 1 so this
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simply
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means the shorthand notation for this so
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we're incrementing the value
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of by one every
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time and also we will do this for the
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same for counter as
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well and after that if the counter value
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is
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uh greater than the value of B when this
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condition evaluates to
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true then we will break out of this loop
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and whatever is the value which is
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stored inside
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sum we will try to print this out so now
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how the program will work right here
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initial value of a is 10 b is equal to 5
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so when this condition hits counter is
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zero so 0 is smaller than five so this
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condition will evaluate to true so now
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sum will become one counter will also
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become one and in the next iteration
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then it again will check one is not
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greater than five so again it will come
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so sum value was 1 so 1 + 1 comes out to
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be 2 and counter value will also be
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increased so 1 + 1 is equal to 2 so 2
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again is not greater than 5 so again 2 +
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1 3 3 so this will keep on repeating
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itself when the condition will hit which
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will be the value of counter will become
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six so here it will say six is not
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smaller than five so this will break
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out and now the sum value will be five
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so if you print if you run this so now
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the value of sum is equal to
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5 so 10 + 5 is not equal to 5
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so what we have done using this while
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loop we have captured everything which
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is stored inside B and stored this
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inside this sum variable so now in the
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next step what we need to do sum is
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already is equal to 5 so what we need to
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do we need to just increment whatever is
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there inside the a so 10 + 5 is equal to
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15
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so so here we simply
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say we do this step and then we print
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out
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sum so this is 15 so essentially we do
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use this plus operator but uh this is
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actually the way by which you can use a
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while loop and still add two numbers so
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this may sound something repetitive
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because we are repeating the it is
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taking way long we can directly write a
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+ b which will do the addition for us
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but this is actually the way by which
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you can use the while loop so
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essentially this while loop is
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transferring everything which is there
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inside B into sum so sum becomes five
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and then in the next step we are
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uh incrementing what is there in the a
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so a a plus
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sum right here and then we print out the
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result so in this way uh hopefully you
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have understood how we use the while
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loop for addition of two
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numbers and also check out my website
5:16
freemediattools.com
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uh which contains thousands of tools