What will be the values of variables 'P' and 'Q' after the execution of the following code-
Solution and detailed answer shared after three hours. Comment your answer below!
Take this opportunity to master your Arduino coding skills!
UPDATE- Here's the SOLUTION-
The value of P will be 5 and the value of q will be 6. If you've answered it correctly, congrats! If not, no worries, continue reading below to understand the question better.
So lets deal with the value of P first-
1. Notice that the only place we are altering the value of P is in the definition of the for loop i.e-
2. The value of P will get incremented till satisfies the condition, P<=4.
Which means when the value of P becomes 5, the loop will terminate.
Hence the value of P will be 5.
Now, moving on the find the value of Q-
For a quick recap, this is how for loops work-
This is just another way of writing,
So in every iteration, two things happen-
1. The new value of Q becomes the value of Q + the present value of P.
2. One is subtracted from the value of Q.
So in the first iteration, initially, P=0 and Q=0.
Which, after the execution of the loop becomes P=1 and Q=0.
Second iteration,
P=2 and Q=1.
Third Iteration-
P=3 and Q=4.
Fourth iteration-
p=4 and Q=6.
Fifth iteration-
P=5 and Woops! The condition P<=4 is no longer satisfied, so the loop terminates here. Hence, the value of Q=6.
int P,Q=0; for(P=1; P<=4; P++) { Q+=P; Q--; }
Solution and detailed answer shared after three hours. Comment your answer below!
Take this opportunity to master your Arduino coding skills!
UPDATE- Here's the SOLUTION-
The value of P will be 5 and the value of q will be 6. If you've answered it correctly, congrats! If not, no worries, continue reading below to understand the question better.
So lets deal with the value of P first-
1. Notice that the only place we are altering the value of P is in the definition of the for loop i.e-
for(P=1; P<=4; P++)
2. The value of P will get incremented till satisfies the condition, P<=4.
Which means when the value of P becomes 5, the loop will terminate.
Hence the value of P will be 5.
Now, moving on the find the value of Q-
For a quick recap, this is how for loops work-
And incase you're new to this,
Q+=P;
This is just another way of writing,
Q=Q+P;
1. The new value of Q becomes the value of Q + the present value of P.
2. One is subtracted from the value of Q.
So in the first iteration, initially, P=0 and Q=0.
Which, after the execution of the loop becomes P=1 and Q=0.
Second iteration,
P=2 and Q=1.
Third Iteration-
P=3 and Q=4.
Fourth iteration-
p=4 and Q=6.
Fifth iteration-
P=5 and Woops! The condition P<=4 is no longer satisfied, so the loop terminates here. Hence, the value of Q=6.
Comments
Post a Comment