/* __FILE__ - a string that holds the path/name of the compiled file; __LINE__ - an integer that holds the number of the current line number; __DATE__ - a string that holds the current system date; __TIME__ - a string that holds the current system time; __STDC__ - defined as the value '1' if the compiler conforms with the ANSI C standard; __cplusplus - determines if your compiler is in C or C++ mode. Usually used in headers. */ #include void main(void) { printf("The path/name of this file is %s\n", __FILE__); printf("The current line is %d\n", __LINE__); printf("The current system date is %s\n", __DATE__); printf("The current system time is %s\n", __TIME__); #ifdef __STDC__ printf("The compiler conforms with the ANSI C standard\n"); #else printf("The compiler doesn't conform with the ANSI C standard\n"); #endif #ifdef __cplusplus printf("The compiler is working with C++\n"); #else printf("The compiler is working with C\n"); #endif }