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Question: Write a code to count the no. of 1?s in a binary representation of a number?

Answer: This is the code for any bit compiler...


#define TESTBIT 1 /*always better to represent like this instead of the code written above....

or

place a constant before test bit so that no changes can be made....*/

int no_of_1s=0;

for(i=0; i < (sizeof(int) * 8) ; i++)
{
if(given_no & (TESTBIT<<i)
no_of_1s++;

}



Category Hardware and Software Design Interview Questions & Answers - Exam Mode / Learning Mode
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Question: Write a code to count the no. of 1?s in a binary representation of a number?
Answer:

This is the code for any bit compiler...


#define TESTBIT 1 /*always better to represent like this instead of the code written above....

or

place a constant before test bit so that no changes can be made....*/

int no_of_1s=0;

for(i=0; i < (sizeof(int) * 8) ; i++)
{
if(given_no & (TESTBIT<<i)
no_of_1s++;

}
Source: CoolInterview.com


//for 16-bit no
//
int no_of_1s=0;
int testbit=1;
for(i=0;i<16;i++)
{
if(given_no&testbit)
no_of_1s++;
testbit = testbit<<1;
}
//now the variable no_of_1s is having the result
Source: CoolInterview.com

Answered by: subbiah | Date: 8/7/2008 | Contact subbiah Contact subbiah


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