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C/C++ Source or Header  |  1991-08-05  |  335 b   |  20 lines
  1.  /* math.c from page 228*/
  2.  #include <stdio.h>
  3.  #include <stdlib.h>
  4.  #include <math.h>
  5. main(int argc, char **argv)
  6.  {
  7.     double  result;
  8.     if(argc < 2)
  9.     {
  10.         printf("usage: %s <degree>\n", argv[0]);
  11.  
  12.     }
  13.     else
  14.     {
  15.         result = sqrt(atof(argv[1]))
  16.         if(errno != EDOM)
  17.             printf("sqrt (%s) = %f\n",
  18.             argv[1], result);
  19.     }
  20.  }