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C Language > Learn C Language > What are the __DATE__ and __TIME__ preprocessor command...
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What are the __DATE__ and __TIME__ preprocessor commands?

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The standard predefined macros are specified by the relevant language standards, so they are available with all compilers that implement those standards. Older compilers may not provide all of them. Their names all start with double underscores. __DATE__ This macro expands to a string constant that...
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The standard predefined macros are specified by the relevant language standards, so they are available with all compilers that implement those standards. Older compilers may not provide all of them. Their names all start with double underscores. __DATE__ This macro expands to a string constant that describes the date on which the preprocessor is being run. The string constant contains eleven characters and looks like "Feb 12 1996". __TIME__ This macro expands to a string constant that describes the time at which the preprocessor is being run. The string constant contains eight characters and looks like "23:59:01". read less
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Thank You for your Questions.... _DATE_ macro expands to a string constant that describes the date on which the pre-processor is being run whereas _TIME_ macro expands to a string constant that describes the time at which the pre-processor is being run. Thanks, Team DishaaPro
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Preprocessor is first statement that get executed. It tells compiler to pre-process before compilation. _DATE --> The current date as a character literal in "MMM DD YYYY" format. and The current time as a character literal in "HH:MM:SS" format. you can use them as below : void main() { printf("Date...
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Preprocessor is first statement that get executed. It tells compiler to pre-process before compilation. _DATE --> The current date as a character literal in "MMM DD YYYY" format. and The current time as a character literal in "HH:MM:SS" format. you can use them as below : void main() { printf("Date :%s\n", __DATE__ ); printf("Time :%s\n", __TIME__ ); } read less
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Experienced faculty in C with data structures and C++ with Data Structures,Linux Admin with Advance linux concepts

__DATE__ and __TIME are global identifiers __DATE__ returns string literal Date for when the processing begins on that file __TIME__ return string literal Time for when the processing begins on that file.
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__DATE_ macro show current date as a character in "MMM DD YYYY" format. __TIME__ macro show current time as a character in "HH:MM:SS" format.
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The __DATE__ macro is used to insert the current compilation date in the form "mm dd yyyy" into your program. Similarly, the __TIME__ macro is used to insert the current compilation time in the form "hh:mm:ss" into your program. This date-and-time-stamp feature should not be confused with the current...
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The __DATE__ macro is used to insert the current compilation date in the form "mm dd yyyy" into your program. Similarly, the __TIME__ macro is used to insert the current compilation time in the form "hh:mm:ss" into your program. This date-and-time-stamp feature should not be confused with the current system date and time. Rather, these two macros enable you to keep track of the date and time your program was last compiled. This feature can come in very handy when you are trying to track different versions of your program. For instance, many programmers like to put a function in their programs that gives compilation information as to when the current module was compiled. This task can be performed as shown here: #include stdio.h void main(void); void print_version_info(void); void main(void) { print_version_info(); } void print_version_info(void) { printf("Date Compiled: %s\n", __DATE__); printf("Time Compiled: %s\n", __TIME__); } read less
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__DATE__ A character string literal containing the date when the source file was compiled. The date will be in the form: "Mmm dd yyyy" where: Mmm represents the month in an abbreviated form (Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, or Dec). dd represents the day. If the day...
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__DATE__ A character string literal containing the date when the source file was compiled. The date will be in the form: "Mmm dd yyyy" where: Mmm represents the month in an abbreviated form (Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, or Dec). dd represents the day. If the day is less than 10, the first d will be a blank character. yyyy represents the year. __TIME__ Defined as a character string literal containing the time when the source file was compiled. The time will be in the form: "hh:mm:ss" where: hh represents the hour. mm represents the minutes. ss represents the seconds. read less
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__DATE__ prints the current date in "MMM DD YYYY" format. _TIME_ prints the current time in "HH:MM:SS" format.
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The __DATE__ macro is used to insert the current compilation date in the form "mm dd yyyy" into your program. The __TIME__ macro is used to insert the current compilation time in the form "hh:mm:ss" into your program.
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Mathematics and Computer science guide

_DATE__ The current date as a character literal in "MMM DD YYYY" format. __TIME__ The current time as a character literal in "HH:MM:SS" format. printf("File :%s\n", __FILE__ ); printf("Date :%s\n", __DATE__ );
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