Problem : 10


#include <stdio.h>
#define FOR(I, J, K) \
    for(I =0 , K = 0; I < J; I++, K += I)

int main ()
{
    int j = 4, k = 12, i;
    FOR  (i, j, k);
    printf ("%d\n", k);
    return 0;
}

// What's the output ? [Do not execute / run]
// Source : http://www.youngprogrammer.com/

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