write a c program to change only the 3rd bit of the
particular number such that other bits are not affected..
if bitnum=10(say.. it can be any no..
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Answer Posted / gokulnaathan
#include <stdio.h>
int main()
{
unsigned int data = 0x000000f0;
int bitpos = 4;
int bitvalue = 1;
unsigned int bit = data;
bit = (bit>>bitpos)&0x00000001;
int invbitvalue = 0x00000001&(~bitvalue);
printf("%x\n",bit);
if(bitvalue ==0)
{
if(bit==0)
printf("%x\n",data);
else
{
data = (data^(invbitvalue<<bitpos));
printf("%x\n",data);
}
}
else
{
if(bit==1)
printf("elseif %x\n",data);
else
{
data = (data|(bitvalue<<bitpos));
printf("else %x\n",data);
}
}
}
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