intmax_t imaxabs(  
   intmax_t n   
);  

// crt_imaxabs.c  
// Build using: cl /W3 /Tc crt_imaxabs.c  
// This example calls imaxabs to compute an  
// absolute value, then displays the results.  
  
#include <stdio.h>  
#include <stdlib.h>  
#include <inttypes.h>  
  
int main(int argc, char *argv[])  
{  
   intmax_t x = LLONG_MIN + 2;  
  
   printf("The absolute value of %lld is %lld\n", x, imaxabs(x));  
}  

The absolute value of -9223372036854775806 is 9223372036854775806