do loop does not exit on key word

[mortui]

hi ,
for starters i hope this question wasn't posted yet.
i want to write a small program that askes the user what he wants to do , and then executes the comand in system . But for some reason it doesn't quit on the key word
this is the code:

 #include <stdio.h>

/*a simple interaction programme that schow the system options*/
#define systemt "\x1b[32m"                 /*changes the color to green for system output*/
#define user "\x1b[0m"                    /*changes the color to white for user input*/
int main()
{ 
 char name[20],choise[20];

    printf(systemt "hello user what's you name? \n");
      printf(user);
    gets(name);
do{
    printf(systemt"hi %s, how can I help you ? \n",name);
      printf(user);
    gets (choise);
    system(choise);}
    while(choise !="bye");/*does not quit loop when i type bye*/    

return(0);
}
/*void help()
{
}*/

Is there something wrong white the code or does the system bock me from reusing the choise string.
thx for all reply's
ps i'll inculde the original c file as well

[grumpy]

The way to compare C strings is with the strcmp() function - declared within the standard header <string.h> - not comparison operators (==, !=, >=, etc).

Also, gets() has been removed from the latest C standard for a reason - it is dangerous. Look up the function fgets() [all versions of C] or gets_s() functions [C11 only].

Your program is calling system(choise) BEFORE any check on what choise contains. That is also quite dangerous - it allows a user to do almost anything, malicious or not.

And choice is not spelt with an 's'.