132.c

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#include <stdio.h> 
#include <dos.h> 

/* Get current drive as 'A', 'B', ... */ 
char current_drive(void) 
{ 
char curdrive; 

/* Get current disk as 0, 1, ... */ 
curdrive = bdos(0x19, 0, 0); 
return('A' + curdrive); 
} 

int main(void) 
{ 
printf("The current drive is %c:\n", current_drive()); 
return 0; 
}