Which of the following will not change the file-position pointer to
the same position as the others? Assume a 10-byte file size and a
current position at byte # 1 ,
fileObject.seekg(2, ios::beg);
fileObject.seekg(2);
fileObject.seekg(1, ios::cur);

Question

UpStudy AI · Accepted Answer

We start with the assumption that the file has 10 bytes and that the current file‐position pointer is at byte $$#1$$. We then examine each call individually.

1. $$ \texttt{fileObject.seekg(2, ios::beg);} $$  
   This call sets the pointer to an absolute position: it places the pointer at byte $$#2$$ (counting bytes from the beginning).

2. $$ \texttt{fileObject.seekg(2);} $$  
   When the second argument is omitted, the standard default is $$ ios\::beg $$. Thus this call is equivalent to  
   $$
   \texttt{fileObject.seekg(2, ios::beg);}
   $$
   and moves the pointer to byte $$#2$$.

3. $$ \texttt{fileObject.seekg(1, ios::cur);} $$  
   This call moves the pointer relative to its current position. Since we are assuming the current position is at byte $$#1$$, advancing by 1 positions the pointer at  
   $$
   1 + 1 = 2.
   $$
   Thus, it too moves the pointer to byte $$#2$$.

Because all three calls place the pointer at byte $$#2$$ (when the current position is initially byte $$#1$$), the answer is that they all result in the same final file‐position.

However, note that the first two calls are absolute (using $$ ios\::beg $$) while the third is relative (using $$ ios\::cur $$). In a different context—if the current file-position is not at byte $$#1$$—the third call would result in a different absolute position.

Under the given assumption (current pointer at byte $$#1$$), all three calls yield the same final position.
All three calls move the file-position pointer to byte $$#2$$.

Which of the following will not change the file-position pointer to
the same position as the others? Assume a 10-byte file size and a
current position at byte # 1 ,
fileObject.seekg(2, ios::beg);
fileObject.seekg(2);
fileObject.seekg(1, ios::cur);

Solución de inteligencia artificial de Upstudy

Responder

Solución

Bonus Knowledge

preguntas relacionadas

Latest Computer Technology Questions

Which of the following will not change the file-position pointer to the same position as the others? Assume a 10-byte file size and a current position at byte # 1 , fileObject.seekg(2, ios::beg); fileObject.seekg(2); fileObject.seekg(1, ios::cur);

Solución de inteligencia artificial de Upstudy

Responder

Solución

Bonus Knowledge

preguntas relacionadas

Latest Computer Technology Questions

Which of the following will not change the file-position pointer to
the same position as the others? Assume a 10-byte file size and a
current position at byte # 1 ,
fileObject.seekg(2, ios::beg);
fileObject.seekg(2);
fileObject.seekg(1, ios::cur);