<![CDATA[
int main() {
int i = -10;
float f = -10;
double d = 10;
double d2 = 0;
printf("sign(i) = %d\n", sign(i));
printf("sign(f) = %d\n", sign(f));
printf("sign(d) = %d\n", sign(d));
printf("sign(d2) = %d\n", sign(d2));
}
]]>
<![CDATA[
sign(i) = -1
sign(f) = -1
sign(d) = 1
sign(d2) = 0
]]>