This is compiled and run with Win-TC. If it cannot be compiled, it may need to be modified according to your compiler. If the output result is wrong, you should adjust the value in table [4].
-
I don't know why I used a string, but 16.
0 and' 0' are different.
0 & amp 1= 1
0 ' & amp 1 ' = 0x 30 & amp； 0x 3 1 = 00 1 10000。 00110001= 0000001is not equal to'1'* * * * * *
In addition, the AND operation cannot directly manipulate arrays and strings.
-
# include & ltstdio.h & gt
# include & ltstring.h & gt
Master ()
{
Structure table
{
Unsigned long Dest
Unsigned long mask;
Unsigned long gate;
Unsigned long integer;
};
Structure table tab[4]={
{0xcb4acd00，0xffffffff，0xcb4acd0 1，0xcb4acd0 1}，
{0xcb4ace00，0xffffffff，0xcb4ace0 1，0xcb4ace0 1}，
{0xcb4acf00，0xffffffff，0xcb4acf0 1，0xcb4acf0 1}，
{0xcb4ad000，0xffffffff，0xcb4ace02，0x CB 4 ace 0 1 } }；
Unsigned long integer i 1, i2, i3, i4;
Unsigned long IP;
int I；
int m；
char IP _ str[33]= { 0 }；
Printf ("Please enter the destination ip address:");
scanf("%s "，IP _ str)；
Sscanf(ip_str, "%d.% d.% d", & ampi 1, & ampi2, & ampi3 and AMPI 4);
IP =(I 1 & lt； & lt24)+(I2 & lt； & lt 16)+(i3 & lt； & lt8)+i4；
for(m = 0； m & lt=3; m++)
If (ip& [m]. Mask==tab[m]。 Target)
Printf("IP data should be transferred to ip:%d.%d.%d.%d\n ",
Tab [m] Internet & amp0xff000000 & gt& gt24,
Tab [m] Internet & 0x0000 & gt>16,
Tab [m] Internet & amp0x0000ff00 & gt& gt8,
Tab [m] Internet & amp0x000000ff);
Printf ("Press any key to exit. \ n ")；
getch()；
}