Open the followingbadpoem.txtfile and perform read operations (which advance the position pointer) and then useseekto move to a new position in the file.

Usefopento open the file. Then, useftellto query the current position.

fid = fopen('badpoem.txt');ftell (fid)

ans = 0

Read the first three lines and query the position in the file after each read. Usefgetlto read andfseekto examine the current position after the read operation.

tline1 = fgetl(fid)% read the first line

tline1 = 'Oranges and lemons,'

ftell (fid)

ans = 20

Read the second line and examine the current position.

tline2 = fgetl（fid）％阅读第二行

tline2 = 'Pineapples and tea.'

ftell (fid)

ans = 40

Read the thrid line and examine the current position.

tline3 = fgetl(fid)% read the third line

tline3 ='猩猩和猴子，'

ftell (fid)

ans = 64

To read line 2, set the position in the file to point to the beginning of line 2. Usefseekto set the position, and then perform a read operation.

fseek(fid,20,'bof');fgetl(fid)

ans = 'Pineapples and tea.'

Close the file.

fclose(fid);