Question

Create a program in C++ which checks for 1 bit errors in an error detection system which uses a single parity bit (the single parity bit checks the parity of all bits in each code). Each code is 8 bits (7 bits for data and one for parity). The code distance is 2. You program should check for even parity (parity bit is 1 for even parity). Your program should allow the user to input a single unsinged decimal value up to 255, and then output whether there is a 1 bit error or not.

Answer 1

if the number of 1;s are even then there is no error and if there are odd numbers of 1's there is error

because parity bits are used to maintain even numbers of 1's

C++ code :

int main()
{
int input;
cin>>input;
int cnt=0;
while(input!=0)
{
   int r=input%2;
   if(r==1)
   cnt++;
   }
   if(cnt%2==1)
   cout<<"ERROR OCCURED";
   else
   cout<<"NO ERROR";
return 0;
}

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