#include <stdio.h>
#include <string.h>
int main(void)
{
char even[4];
char odd[4];
char res[7];
int pop;
pop = sizeof(res)-1;
int j;
for (j=0; j<pop; ++j)
{
if (j%2 == 0 ) {
res[j] = even[j/2];
}
else{
res[j] = odd[(j-1)/2];
}
}
res[j] = '\0';
}
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