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What are the standard predefined macros in C language?

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What are the standard predefined macros in C language?
posted Nov 19, 2013 by anonymous

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2 Answers

0 votes

Following six I know may be more are there - 

_ _LINE_ _ Inserts the current source code line number in your code.
_ _FILE_ _ Inserts the current source code filename in your code.
_ DATE_ Inserts the current date of compilation in your code.
_ _TIME_ _ Inserts the current time of compilation in your code.
_ _STDC_ _ Is set to 1 if you are enforcing strict ANSI C conformity.
_ _cplusplus Is defined if you are compiling a C++ program.
answer Nov 19, 2013 by Salil Agrawal
0 votes 
__DATE__
__TIME__
__FUNCTION__   => Most Useful
answer Nov 19, 2013 by Vikas Upadhyay
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what is meaning of return value in C language? 
#include <stdio.h>
int main()
{
    char vowels[5]={'a','e','i','o','u'};
    int x;

    printf("Vowel Letters");
    for(x=0;x<=5;x++)
    {
         printf("\n %C",vowels[x]);
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}

Output 

Vowel Letters
a
e
i
o
u
♣
Process exited after 0.1132 seconds with return value 3

What is the meaning of return value 3

...