C ldiv() function

C ldiv() function - Long and Long Long Division

Syntax ldiv() function

div_t div(long int numer, long int denom)

The C library function div_t div(long int numer, long int denom) divides numer (numerator) by denom (denominator).

The ldiv() function is used to calculate the quotient and remainder of the division of numerator by denominator.

Parameters ldiv() function

Return value from ldiv()

• A structure of type ldiv_t, containing both the quotient (long int quot) and the remainder (long int rem).
• If the value cannot be represented, the return value is undefined.
• If denominator is 0, an exception is raised.

Example: ldiv() function

The following example shows the usage of ldiv() function.

#include <stdlib.h>
#include <stdio.h>
 
int main(void)
 {
   long int nums[4] = {7,76,-45,-34};
   long int den[4] = {3,7,5,-7};
   ldiv_t ans;   /* ldiv_t is a struct type containing two long ints:
                    'quot' stores quotient; 'rem' stores remainder */
   short i,j;
 
   printf("Results of long division:\n\n");
   for (i = 0; i < 4; i++)
      for (j = 0; j < 4; j++)
      {
         ans = ldiv(nums[i], den[j]);
         printf("Dividend: %6ld  Divisor: %6ld", nums[i], den[j]);
         printf("  Quotient: %6ld  Remainder: %6ld\n", ans.quot, ans.rem);
      }
}

Output:

Results of long division:

Dividend:      7  Divisor:      3  Quotient:      2  Remainder:      1
Dividend:      7  Divisor:      7  Quotient:      1  Remainder:      0
Dividend:      7  Divisor:      5  Quotient:      1  Remainder:      2
Dividend:      7  Divisor:     -7  Quotient:     -1  Remainder:      0
Dividend:     76  Divisor:      3  Quotient:     25  Remainder:      1
Dividend:     76  Divisor:      7  Quotient:     10  Remainder:      6
Dividend:     76  Divisor:      5  Quotient:     15  Remainder:      1
Dividend:     76  Divisor:     -7  Quotient:    -10  Remainder:      6
Dividend:    -45  Divisor:      3  Quotient:    -15  Remainder:      0
Dividend:    -45  Divisor:      7  Quotient:     -6  Remainder:     -3
Dividend:    -45  Divisor:      5  Quotient:     -9  Remainder:      0
Dividend:    -45  Divisor:     -7  Quotient:      6  Remainder:     -3
Dividend:    -34  Divisor:      3  Quotient:    -11  Remainder:     -1
Dividend:    -34  Divisor:      7  Quotient:     -4  Remainder:     -6
Dividend:    -34  Divisor:      5  Quotient:     -6  Remainder:     -4
Dividend:    -34  Divisor:     -7  Quotient:      4  Remainder:     -6

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