The source code for program 2: Project Blink LEDs, used the #define statement to set the DELAY in hexadecimal of fffff. #define directive substitutes token-string for all subsequent occurrences of an identifier in the source file. The identifier is replaced only when it forms a token-The source code for program 2: Project Blink LEDs, used the#define statement to set the DELAY in hexadecimal of fffff. #define directive substitutes token-string for all subsequent occurrences of an identifier in the source file. The identifier is replaced only when it forms a token