The write_ini function copies a string into the 
specified section of an initialization file.

Input:
SECTION :
name of the section to which the string will be written. If the 
section does not exist, it is created. The name of the section
is case-independent; the string can be any combination of
uppercase and lowercase letters

KEY :
name of the key to be associated with a string. If the key does 
not exist in the specified section, it is created. If this 
parameter is "", the entire section, including all entries 
within the section, is deleted.

VALUE : 
string to be written to the file. If this parameter is "", the 
key pointed to by the KEY parameter is deleted.

FILE :
name of the initialization file. If this parameter does 
not contain a full path to the file, the system searches 
for the file in the Windows directory.

Output:
Q :
if the function successfully writes the string nonzero is returned.
if the function fails zero is returned.