Description |
 |
Each of the operands in a multiplicative expression must have
arithmetic type. Further, the operands for the %
operator must have integral type.
The usual arithmetic conversions are performed on the operands
to select a resulting type. The result is not an lvalue.
The result of the multiplication operator *
is the arithmetic product of the operands.
The result of the division operator /
is the quotient of the operands.
The result of the mod operator %
is the remainder when the left argument is divided by the right
argument. By definition, a%b==a- ((a/b)*b).
The second operand (/
or %) must not
be 0.
Table 5-2 “Results for Inexact a/b” describes
the result of a/b
for positive and negative integer operands, when the result is inexact.
Table 5-2 Results for Inexact a/b
| b positive | b negative |
|---|
a positive | Largest integer less than the true quotient. | Smallest integer greater than the true
quotient. |
a negative | Smallest integer greater than the true
quotient. | Largest integer less than the true quotient. |
For example, -5/2==-2.
The true quotient is -2.5; the smallest integer greater than -2.5
is -2.
Table 5-3 “Results for Non-zero ab” describes
the sign of the result of a%b
for positive and negative operands, when the result is not zero.
Table 5-3 Results for Non-zero ab
| b positive | b negative |
|---|
a positive | + | + |
a negative | - | - |
For example:
