SAS/C Library Reference, Vol. 1

div -- Integer Division

SYNOPSIS

 #include <stdlib.h>

 div_t div(int numer, int denom);

DESCRIPTION

div computes the quotient and remainder of numer divided by denom.

RETURN VALUE

div returns a structure of type div_t, which contains both the quotient and remainder. The definition of the div_t type is

 typedef struct {
 int rem;
 int quot;
 } div_t;

The return value is such that

 numer == quot * denom + rem

The sign of rem is the same as the sign of numer.

EXAMPLE

This example converts an angle in radians to degrees, minutes, and seconds:

  #include <math.h>
  #include <stdlib.h>
  #include <lcmath.h>

  main()
  {
     double rad, angle;
     int deg, min, sec;
     div_t d;

     puts(" Enter any angle in radians: ");
     scanf("%lf", &rad);

        /* Convert angles to seconds and discard fraction. */
     angle = rad * (180 * 60 * 60)/M_PI;

     sec = angle;
     d = div(sec, 60);
     sec = d.rem;
     d = div(d.quot, 60);
     min = d.rem;
     deg = d.quot;

     printf("%f radians = %d degrees, %d', %d", n", rad, deg,
             min, sec);
  }

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