Compile Conditional Field Transcript For Free

8.2 Conditional Compilation (#if, #ifdef, #ifndef, #else, #elif, #endif, and defined) Six directives are available to control conditional compilation. They delimit blocks of program text that are compiled only if a specified condition is true.

Conditional compilation can be performed using commands like #ifdef, #endif, #ifndef, #if, #else and #elif in a C Program. Example : Printing the AGE macro, if AGE macro is defined, else printing Not Defined and ending the conditional compilation block with an #endif directive.

The preprocessor conditional compilation directive spans several lines: The condition specification line (beginning with #if , #ifdef , or #ifndef ) Lines containing code that the preprocessor passes on to the compiler if the condition evaluates to a nonzero value (optional) The #elif line (optional)

In conditional compilation, particular blocks of code in a program are compiled selectively while others are ignored. For example, you may want to write debugging statements that compare the speed of different approaches to the same programming task, or you may want to localize an application for multiple languages.

Conditional compilation provides a way of including or omitting selected lines of source code depending on the values of literals specified by the DEFINE directive. In this way, you can create multiple variants of the same program without the need to maintain separate source streams.

Conditional compilation can be useful when compiling code for a debug build or when compiling for a specific configuration. A conditional directive beginning with an #if directive must explicitly be terminated with an #endif directive. #define lets you define a symbol.

Conditional Compilation Pre-Processor Directives in C: If the condition is true, then the block will be pass from the compilation process, if the condition is false then the complete block of the statements will be removed from the source at the time of the pre-processor.

To implement conditional compilation, define a static final boolean value as a non-private member of some class. place code which is to be conditionally compiled in an if block which evaluates the boolean. set the value of the boolean to false to cause the compiler to ignore the if block; otherwise, keep its value as true.

Ricardy Go to the object's field page under Setup. Click on the view link for the field. Click the Set Field-Level Security button. Change the field to read-only for the appropriate profiles (You would need to change to appropriate profile to test)

On the form template, select the control that you want to add conditional formatting to, and then click Conditional Formatting on the Format menu. In the Conditional Formatting dialog box, click Add.