What is the meaning of " #define 1000 a" in C language

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C

what is the value of that macro defined above

What I have tried:

I didn't get any result, Please help me

Posted 1-Feb-18 4:58am

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Richard MacCutchan · Answer 1 · 2018-02-01T05:14:00

Solution 1

That statement is invalid, you cannot change the definition of a constant. I suspect you mean:

C++

#define a 1000

// now anywhere the compiler sees a it will replace it with 1000.
//
// e.g.

printf("The value of a is %d\n", a);

// will print
//    The value of a is 1000

Posted 1-Feb-18 5:14am

Richard MacCutchan

Leo Chapiro · Answer 2 · 2018-02-01T05:19:00

Solution 2

#define is a preprocessor macro, e.g.

C++

#define a 1000

Now you can use "a" instead of 1000.
In your question you use it wrong, the compiler prints error E0040 "expected an identifier".

Posted 1-Feb-18 5:19am

Leo Chapiro

Updated 1-Feb-18 5:22am

v3