Give a = 12 and b = 36 write a C function/macro that returns 3612 without using arithmetic, strings and predefined functions.
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Below is one solution that uses String Token-Pasting Operator (##) of C macros. For example, the expression “a##b” prints concatenation of ‘a’ and ‘b’.
Below is a working C code.
#include <stdio.h> #define merge(a, b) b##a int main(void) { printf("%d ", merge(12, 36)); return 0; } |
Output:
3612
Thanks to an anonymous user to suggest this solution.
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