cppreference.com > Standard C Math > div div Syntax:
      #include <stdlib.h>
      div_t div( int numerator, int denominator );
The function div() returns the quotient and remainder of the operation numerator / denominator. The div_t structure is defined in stdlib.h, and has at least:
       int quot;   // The quotient
       int rem;    // The remainder
For example, the following code displays the quotient and remainder of x/y:
       div_t temp;
       temp = div( x, y );
       printf( "%d divided by %d yields %d with a remainder of %d\n",
               x, y, temp.quot, temp.rem );
Related topics: ldiv