C programming Syntax

Question

Is is possible to have this line of code ?

loops_per_msec = (1000000 * loops_per_msec / run_time ? :
        loops_per_msec);

My compiler gives me error although this line of code is exactly copied and pasted from other usable source file.

Answer 1

The ternary conditional operator ?: takes three operands.

But GCC accepts, as an extension, to omit the middle operand.

In your case, coding

loops_per_msec = (1000000 * loops_per_msec / run_time ? run_time :
    loops_per_msec);

would make any compiler happy.