# V3018. Consider inspecting the application's logic. It's possible that 'else' keyword is missing.

The analyzer has detected a code fragment where an 'if' statement occupies the same line as the closing brace of the previous 'if' statement. The 'else' keyword may be missing in this line, and this causes the program to work differently than expected.

Consider the following example:

    if (cond1) {
      Method1(val);
    } if (cond2) {
      Method2(val);
    } else {
      Method3(val);
    }

If the 'cond1' condition is true, not only will method 'Method1' be called, but method 'Method2' or 'Method3' as well. If it is exactly this logic that was intended, the code formatting should be fixed by moving the second 'if' statement to the next line:

    if (cond1) {
      Method1(val);
    }

    if (cond2) {
      Method2(val);
    } else {
      Method3(val);
    }

This code formatting is more conventional and won't make other programmers suspect a bug. Besides, the analyzer will stop outputting the warning, too.

But if it's not the behavior that the programmer really intended, then there is an execution logic error, so the keyword 'else' must be added. Correct code in this case will look as follows:

    if (cond1) {
      Method1(val);
    } else if (cond2) {
      Method2(val);
    } else {
      Method3(val);
    }

This diagnostic is classified as:

CWE-670

You can look at examples of errors detected by the V3018 diagnostic.