Reading one char from standard Input without waiting for CR

[Stedy]

Hi,

If you are using C, the setbuf() or better, the setvbuf() function will do what you want.

the command
setvbuf(fp,NULL,_IONBF,0);

Will turn off buffering in a console window, you can then use getchar() or similar to read the character thus:

Example program (tested with Dice C, copied from the examples)

#include
#define BUFFER_SIZE 128
main()
{
   int c;
   char buf[256];
 
   setvbuf(stdin,NULL, _IONBUF,0);
   printf("Type a character: ");
   fflush(stdout);
   c=getchar();
   printf("c=%d\n");

return(0);
}

Ian