C - modes in fopen()

• Text Mode
• Binary Mode

r -> reading
-> If file NOT exist, then fopen() returns NULL
Reading from a text file in C - Code Snippet

w -> writing
-> if file EXISTS, then its overwritten
-> if file NOT exist, it will be created
Writing to a text File in C - Code Snippet

a -> append (data added at end)
-> if file NOT exist, it will be created

Multiple Modes in fopen()
Always close files when opening them

rb -> reading in binary mode
-> if file NOT EXIST, then fopen() returns NULL

wb -> writing in binary mode
-> if file EXISTS, then its overwritten
-> if file NOT exist, it will be created

ab -> append (data added at end)
-> if file NOT exist, it will be created

Multiple Modes in fopen()
Always close files when opening them