There are two question in this code. where you have "You do this " please what is the functions or code that is supposed to be there. Thanks. #include #include

using namespace std;

void printstate(bool *s) { /* This function prints out the 25 bit register*/ cout << "state: "; for(int i =0; i < 25;i++) cout << s[i]; cout << endl; }

void leftshift(bool *s) { /*This function shifts the 25 bit register one place to the left*/ //You do this! }

void timestep(bool *s) { /* This function executes one time step of the NLFSR. * The state variable s (which is an array of bool types of length 25) * should be updated according to the NLFSR update rule as discussed * in the project description.*/ //You do this! }

void runnlfsr(bool *s, int numsteps, bool print) { /*This function runs the LFSR from the state s for numsteps steps*/ for(int i =0 ; i < numsteps; i++) { if(print) { cout << s[0]; } timestep(s); } cout << endl; }

#define INITIALSTATE {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1} const bool t[25] = INITIALSTATE;

void setstate(bool *s) {/*This function makes the state equal to the initial state (defined above)*/ for(int i=0; i < 25; i++) s[i]=t[i]; }

bool period_over(bool *s) {/*This function returns true iff the current state is equal to the initial state*/ for(int i = 0; i < 25;i++) { if(t[i] != s[i]) return false; } return true; }

int main() { bool state[25]; setstate(state); runnlfsr(state,50,true); setstate(state); runnlfsr(state,(1 << 25)-1,false); // 2**25 -1 runnlfsr(state,50,true); return 1; }

int main2() { bool state[25]; setstate(state); timestep(state); int i = 1; while(!period_over(state)) { timestep(state);

i++; } cout << "done in " << i << " steps" << endl; printstate(state); return 1; }