Answer Posted / abdur rab

struct node {
int data;
struct node* next;
};

int mid_element ( struct node* _node )
{
struct node* cur_ptr;
struct node* cur_next_ptr;

if ( NULL == _node ) return ( -1 );
else {
cur_ptr = _node;
cur_next_ptr = _node;
while ( ( NULL != cur_ptr -> next )
&& ( NULL != cur_next_ptr -
> next )
&& ( NULL != cur_next_ptr -
> next -> next ) )
{
cur_ptr = cur_ptr -> next;
cur_next_ptr = cur_next_ptr ->
next -> next;
}
}

return ( cur_ptr -> data );
}

write a C program: To search a file any word which starts with ?a?. If the word following this ?a? starts with a vowel.Then replace this ?a? with ?a? with ?an?. redirect with the output onto an output file.The source file and destination file are specified by the user int the command line.

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