How can I obtain the addition result of two int variables without using a loop for testing?

[ooosan]

    [Benchmark]
    public void IntAddition()
    {
        int a = 10;
        int b = 20;
        int c = a + b;
    }

The running result displays an average of 0.0043ns, which is too small.

[timcassell]

Currently not possible. See #1133 and #1802.

Also, the code you pasted is likely constant-optimized by the JIT, so a zero result would be expected. You would need to use arguments or fields to prevent constant-optimizations.