unknowntpo

/* copy t to s ; pointer version 1 */
void strcpy(char *s, char *t) {
    while (*s++ = *t++)
        ;
}

unknowntpo

/* copy t to s ; pointer version 2  */
void strcpy(char *s, char *t) {
    while (*s++ = *t++)
        ;
}



/* copy t to s ; pointer version 1 */
void strcpy(char *s, char *t) {

unknowntpo

/*
 * @ File name: rect.c
 * @ Author: unknowntpo at 2020.2.24 (Mon)
 * @ Title: Check whether a point is in rectangle or not.
 * @ Short description:
 *      Make two point to form a rectangle called 'screen',   
 *      and count the middle point.
 *      then, use ptinrect(middle, screen) function to check that
 *      middle point is in the rectangle.
 * @ K&R_6.2: structures and functions   

unknowntpo

int adder(int a, int b)
{
    int sum = a ^ b;
    int carry = a & b;
    if (carry == 0)
        return sum;
    return adder(sum, carry << 1);
}

unknowntpo

"" syntax on
set number
" set the indent consistant to 4
set tabstop=8
set softtabstop=0 expandtab shiftwidth=4 smarttab
set laststatus=2
set clipboard+=unnamed
set hlsearch

" Folding

unknowntpo

id	c0	c1	username	version	is_deleted
1	old0	old1	Eric	1	f
2	old2	old2	Eric	1	f

unknowntpo

create table data (
id serial, 
c0 text,
c1 text,
username text,
version integer,
is_deleted boolean
);

unknowntpo

create table data (
id serial, 
c0 text,
c1 text,
username text,
version integer,
is_deleted boolean
);

unknowntpo

CREATE TABLE temp (LIKE data INCLUDING ALL);

insert into temp (c0, c1, username, version, is_deleted) values 
('modified', 'old1', 'Eric', 2, false),
('old2', 'old2', 'Eric',  2, false),
('new0', 'new1', 'Kevin', 2, false);

select * from temp;

unknowntpo

select 
temp.id as temp_id,
temp.c0 as temp_c0,  
temp.c1 as temp_c1,
temp.username as temp_username,
temp.version as temp_version,
data.id as data_id,
data.c0 as data_c0,  
data.c1 as data_c1,
data.version as data_version