C语言 llabs用法及代码示例

/* llabs example */
#include <stdio.h>      /* printf */
#include <stdlib.h>     /* llabs */

int main ()
{
  long long int n,m;
  n=llabs(31558149LL);
  m=llabs(-100000000LL);
  printf ("n=%lld\n",n);
  printf ("m=%lld\n",m);
  return 0;
}