6.19.15 div Function

Calculates the quotient and remainder of two numbers.

Include

<stdlib.h>

Prototype

div_t div(int numer, int denom);

Arguments

numer

numerator

denom

denominator

Return Value

Returns the quotient and the remainder.

Remarks

The returned quotient will have the same sign as the numerator divided by the denominator. The sign for the remainder will be such that the quotient times the denominator plus the remainder will equal the numerator (quot * denom + rem = numer).

If either part of the result cannot be represented, such as when attempting to perform a division by zero, the behavior is undefined. MPLAB XC compiler might raise an exception in such circumstances.

Example

See the notes at the beginning of this chapter or section for information on using printf() or scanf() (and other functions reading and writing the stdin or stdout streams) in the example code.

#include <stdlib.h>
#include <stdio.h>

int main(void)
{
  int x, y;
  div_t z;

  x = 7;
  y = 3;
  printf("For div(%d, %d)\n", x, y);
  z = div(x, y);
  printf("The quotient is %d and the remainder is %d\n\n", z.quot, z.rem);

  x = 7;
  y = -3;
  printf("For div(%d, %d)\n", x, y);
  z = div(x, y);
  printf("The quotient is %d and the remainder is %d\n\n", z.quot, z.rem);

  x = -5;
  y = 3;
  printf("For div(%d, %d)\n", x, y);
  z = div(x, y);
  printf("The quotient is %d and the remainder is %d\n\n", z.quot, z.rem);

  x = 7;
  y = 7;
  printf("For div(%d, %d)\n", x, y);
  z = div(x, y);
  printf("The quotient is %d and the remainder is %d\n\n", z.quot, z.rem);
}

Example Output

For div(7, 3)
The quotient is 2 and the remainder is 1

For div(7, -3)
The quotient is -2 and the remainder is 1

For div(-5, 3)
The quotient is -1 and the remainder is -2

For div(7, 7)
The quotient is 1 and the remainder is 0