程式碼示例：

#define MAXLINE 255

char * cy_gets()

{

static char t[ MAXLINE ];

char ch;

int flag=0,i=0;

for ( ; i < MAXLINE; )

{

ch = getch();

switch( ch )

{

case "\r":

case "\n":

t[i] = "\0";

return t;

case "\b":

if ( i > 0 )

i--;

if ( i == 0 )

flag++;

if ( i>0||flag==1 )

{

putch( "\b" );

putch( " " );

putch( "\b" );

}

break;

default:

t[i] = ch;

i++;

flag = 0;

if ( ch == " " )

putch( " " );

else

{

putch( "*" );

putch( "\a" );

}

}

}

t[ MAXLINE - 1 ] = "\0";

return t;

}