[Tips] source code running error

[Tips] source code running error-Linux general technology-Linux programming and kernel information. For details, refer to the following section. Source code:

# Include

# Include

# Include
# Include

# Include

# Define PERM 0755

# Define Buff 512


/* String open ()
{

Static char filename [] = "t1.txt ";

Int handle;

Handle = open (filename, O_RDONLY );

If (handle =-1)

Printf ("% s does not exist \ n", filename );

Else

Printf ("open success \ n ");

}*/

String close ()

{

Static char filename [] = "t1.txt ";

Int handle;

Int ret;

Handle = open (filename, O_RDONLY );

If (handle =-1)

Printf ("% s does not exist \ n", filename );

Else

Printf ("open success \ n ");

Ret = close (handle );

If (ret = 0)

Printf ("close file success \ n ");

Else

Printf ("close file error \ n ");



}

String creat ()

{

Static char filename [] = "t1.txt ";

Int handle;

Handle = creat (filename, PERM );

If (handle =-1)

Printf ("% s create fail \ n", filename );

Else

Printf ("open success \ n ");

}

String write (int argc, char * argv)

{

Char buffer [Buff];

Int source, dest;

Int count;

If (argc! = 3)

{Printf ("sorry input error \ n ");

Exit (1 );}

Source = open (argv [1], O_RDONLY );

If (source =-1)

{Printf ("sorry input error \ n ");

Exit (1 );}

Dest = creat (argv [2], PERM );

If (dest =-1)

{Printf ("% s creat error \ n", argv [2]);

Exit (1 );}

While (count = read (source, buffer, Buff)> 0)

Write (dest, buffer, count );

}


String read ()

{

Static char filename [] = "t1.txt ";

Char buffer [Buff];

Int handle, I;

Int total = 0;

Handle = open (filename, O_RDONLY );

If (handle =-1)

{Printf ("open file fail \ n ");

Exit (1 );}

Else

While (I = read (handle, buffer, Buff)> 0)

Total + = I;

Printf ("The total character in % s is % d \ n", filename, total );

}


String chmod ()

{

Static char file [] = "t1.txt ";

If (chmod (file, 0700) =-1)

{

Printf (stderr, "chmod for file is error \ n", file );

Exit (1 );

}

Printf ("% s mod for file has been changed \ n", file );



}


Main ()

{

Printf ("0 exit \ n ");
Printf ("1 creat a new file \ n ");
Printf ("2 write \ n ");
Printf ("3 read a file \ n ");
Printf ("4 change the potence \ n ");
Printf ("5 check the and exit \ n ");
Printf ("please input a number from 0 to 5: \ n ");
Int x;

Scanf ("% d \ n", & x );

Switch (x)

{

Case '0': close ();

Case '1': creat ();

Case '2': write (int argc, char * argv );

Case '3': read ();

Case '4': chmod ();

}

}

Running result:

6. c: 20: Error: expected '=', ';', 'asm 'or' _ attribute _ 'before' close'
6. c: 38: Error: expected '=', ';', 'asm 'or' _ attribute _ 'before' creat'
6. c: 49: Error: expected '=', ';', 'asm 'or' _ attribute _ 'before' write'
6. c: 69: Error: expected '=', ';', 'asm 'or' _ attribute _ 'before' read'
6. c: 85: Error: expected '=', ';', 'asm 'or' _ attribute _ 'before 'chmod'
6. c: In the 'main' function:
6. c: 110: Error: Too few arguments are provided to the function 'close '.
6. c: 111: Error: Too few arguments are provided to the 'creat' function.
6. c: 112: Error: expected expression before 'int'
6. c: 112: Error: Too few arguments are provided to the 'write' function.
6. c: 113: Error: Too few arguments are provided to the 'read' function.
6. c: 114: Error: Too few arguments are provided to the 'chmod' function.

This cainiao really does not understand what went wrong with the source code. I hope the prawns can help solve the problem ~~~