Answer / kirankumaryakkala

#define set(val,n) val|=1<<n //do left-shift then bitwise OR

logic is val|=1<<n
means,
first shift the value 1 to ntimes and do the bitwise or with
value.
u will get the answer

Answer / vikram

The above code is wrong it should be n-1 instead of n.

#include<stdio.h>
#define SET(val,n) (val|=1<<(n-1))
main()
{
int n = 256;
printf("%d",SET(n,1));
}

Answer / sunitha

/* macro to set Nth bit */

#define SET_N_BIT(x,n) x|((~(unsigned)0)>>(8-(n-n-1))<<n);

Try out this . this is optimised version for setting a bit
work for any bit upto 8 bits if u want for 32 bits than
replace 8 with 32.

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