In this program, we are using two identifiers double() and triple(). These are substi-
tute for double() and triple() with a2 and a3, respectively. When a value is passed
through these macros their corresponding expansions are solved.
12.3 undefInIng a Macro
A macro defined with #define directives can be undefined with #undef directive.
Syntax:
#undef macro_template substitute
It is useful, when we do not want to allow the use of macros in any portion of the program.
12.5 Write a program to undefine a macro.
printf(“\n%d\t%d\t%d”,a,DOUBLE(a),TRIPLE(a));
getche();
}
OUTPUT:
SINGLE DOUBLE TRIPLE
1 2 3
2 4 6 ...
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