C Loops control Questions 4

The goto step; command makes the control jump straight to step:. This can be done in because goto statement can be used to point anywhere if they both are in the same function (in this case being main).

Thus the compiler skips the for loop and  printf(\"PrepSter \"); statement and directly prints PrepInsta.

Currently there is no PrepInsta Explanation. Did you know?

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The unsigned integer values has a maximum value of 4294967295 after which if incremented it returns back to 0.

Here 12800 is incremented and then finally it reaches 0, after which the while loop ends. And then printf command is executed.

Note: Some online compiler might give infinite loop because the time taken is too long for this program to complete.

Realize that int val inside the for loop is a different new variable than the val outside the loop. Also every time the for loop iterates is the value of val inside the loop is set to 15 again. Which is why it is not incremented.

Note that 1 in bits is 0001

The and of i and 1 will be as follows.

for i=0 =0000 & 0001 = 00000

 

for i=1=0001 & 0001 = 0001

 

for i=2=0010 & 0001 = 0000

..

and so on

Thus 0101010101 will be printed.