#Arduino else if command code

The #elif is functionally equivalent to the #elseif directive. Processing continues similar to an ifdef directive. The expression #ifndef Name evaluates to true in Name has The Value TEST2_DEFINED_WITHOUT_A_VALUE (test2) is defined TEST1 is NOT Defined, and TEST2 (test2) is defined TEST1 (test1) is defined and TEST2 is not defined #ifdef TEST2 // another check (nested within the first) * process the input based on the what was defined above */

#Arduino else if command code

The following sample code showing use of the #ifdef directive chain with nested #ifdef directives can be nested, however, all directives inĪ given logical level must exist in a single file. Input is evaluated until an #endif directive is encountered.Ī #endif directive ends the #ifdef processing. #else directive is processed if it exists. If all #elseif directives evaluate to be false, the If an #ifdef is evaluated to be false, then the #elseifĭirective is processed as if it was an #ifdef directive. Test1 and test2 are not defined, test3 is defined Test1 is not defined, test2 is defined, test3 is unchecked Test1 is defined, test2 and test3 are unchecked If the #ifdef directive evaluated to be true, In this case (true), the input file linesĪre processed until a #elseif, #else, or #endifĭirectives are valid only following a #ifdef directive. The expression #ifdef Name evaluates to true in Name has #ifndef Name0 lines to evaluate if Name0 is Not defined #elseif Name1 lines to evaluate if Name1 is defined, and Name0 is defined #else lines to evaluate if Name0 is defined and Name1 is Not defined #endif

#elif NameN lines to evaluate if NameN is defined, and Name0-Name(N-1) is Not defined #else lines to evaluate if Name0-NameN are Not defined #endif Originally, I was using the MKRGSM1400, and libraries associated with that, however, we found these were. The device is registered in the IoT hub, and I can grab an access signature from the azure iot vscode extension. I hope to connect this to Azure IoT hub, using Shared Access Signatures.

#ifdef Name0 lines to evaluate if Name0 is defined #elseif Name1 lines to evaluate if Name1 is defined, and Name0 is Not defined I have a SIM800h gsm unit, and a Arduino MKRZERO. The syntax of the conditional directives are: #endif are the logical directives of the preprocessor.įate of information processed the preprocessor.

When using if.else ifelse statements, keep in mind An if can have zero or one else statement and it must come after any else ifs. Next: #echo - #error Up: Preprocessor directives Previous: #undef The if statement can be followed by an optional else if.else statement, which is very useful to test various conditions using single if.else if statement. #ifdef - #ifndef - #elseif - #elif - #else - #endif