Div () [C language library function source code]

[C language library function source code]

[This program is compiled in Dev C ++ 4.9.9.2]

/*

Returns div_t for division of two integers,

It is defined in the stdlib. h header file.

Typedef struct

{

Int quot;

Int REM;

} Div_t;

Quot: quotient ).

Rem stores the remainder (remainder ).

The algorithm is very similar to the ldiv () function.

This function does not check if the denominator (divisor) is 0.

*/

 

Typedef struct

{

Int quot;

Int REM;

} Div_t;

 

Div_t my_div (INT num, int denom)

{

Div_t R;

 

R. quot = num/denom;

R. Rem = num % denom;

/*

On our general PC (Intel architecture series CPU)

It can run normally. But we do not know other machines.

How does one handle the division and remainder operations?

Write the error handling code.

The divisor is positive, the remainder is negative, the quotient plus 1, and the remainder minus the divisor.

The divisor is negative, the remainder is positive, the quotient minus 1, and the remainder plus the divisor.

*/

If (Num> = 0 & R. Rem <0)

{

++ R. quot;

R. REM-= denom;

}

Else if (Num <0 & R. Rem> 0)

{

-- R. quot;

R. Rem + = denom;

}

Return (R );

}

Int main ()

{

Div_t T;

T = my_div (0x7fffffff, 2 );

Printf ("quotient = % d/tremainder = % d/N", T. quot, T. rem );

System ("pause ");

Return 0;

}