preprocessor directive - Token pasting in c using a variable that increments -

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i have set of arrays :msg1[] msg2[] .... msgn[] . , need use values in while loop. msgi[]. when define #define msg(a) msg##a , put in loop , increment i, expands msgi?

you can't way. instead create new array, contains pointers actual arrays:

int array1[...]; int array2[...];  int *all_arrays[] = { array1, array2 };

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