CODEWITHSUNDEEP
c++cmacros
Tom Xue
Tom Xue

Reputation: 3365

How to define it as a macro?

case MAP_KEY3:
case MAP_KEY4:
case MAP_KEY5:
case MAP_KEY6:
    break;
default:
    LampShow(LampID, 0);
    LampShow(LampID, 2);
    LampShow(LampID, 0);
    break;

I want to make a MARCO of above code so that I can use it anywhere repeatedly. But how to do? It is for C language.

If I do it like below:

#define AAA /
    case MAP_KEY3:  /
    case MAP_KEY4:  /
    case MAP_KEY5:  /
    case MAP_KEY6:  /
        break;      /
    default:        /
        LampShow(LampID, 0);   /
        LampShow(LampID, 2);   /
        LampShow(LampID, 0);   /
        break;

Then I will got this error:

34: syntax error before `case'

line 34 is case MAP_KEY3: /

Upvotes: 0

Views: 125

Answers (2)

0x90
0x90

Reputation: 41022

#define EVIL_MACRO \
case MAP_KEY3: \
case MAP_KEY4: \
case MAP_KEY5: \
case MAP_KEY6: \
    break; \
default: \
    LampShow(LampID, 0); \
    LampShow(LampID, 2); \
    LampShow(LampID, 0); \
    break;

Upvotes: 5

user529758
user529758

Reputation:

I want to make a MARCO of above code so that I can use it anywhere repeatedly

That's what functions are for.

Upvotes: 3

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