Question

Based on the given information given on the left for the main() function, make the call function bool IsValid(string DNA) {

. . .

}

successfully determine validity for DNA (line 15- 24)

int main) zy 621. p06-01 DNA Batch × \ cs109.10.pptx ← → c secure l https://learn.zybooks.com/zybook/UICCS109Hu string DNA cin >> DNA; II read first DNA strand: while (ONA !-.8") // if not end of input marker #, process input: ZyBooks Library > CS 109 home-621 P06-01 DNA B cout << DNA 6 using namespace std; r First, is the DNA strand valid? bool isvalid true; for (unsigned int i " .; i < DNA,length(); i,i4) 10 Isvalid(ana) 12 / Returns true if the DNA strand is valid, false if not. 13 7 14 bool IsValid(string DA) 15 16 17 TOOD 18 19 20 21 isvalid false; if (isVa1idfalse) I/ not valid cout << invalid 23 return false 24 1 25 else cout s "valid,"

Answer 1

bool IsValid(string DNA) {

int size = DNA.size();

for(int i=0; i<size; ++i) {

if(DNA[i]!='A' && DNA[i]!='T' && DNA[i]!='G' && DNA[i]!='C') {

return false;

}

}

return true;

}

double GetCGPercentage(string DNA) {

int size = DNA.size();

int gcCount = 0;

for(int i=0; i<size; ++i) {

if(DNA[i]=='G' || DNA[i]=='C') {

gcCount++;

}

}

return gcCount*100/size;

}

string GetStability(double percentage) {

if(percentage >= 75) {

return "highly stable";

} else if(percentage >= 50) {

return "stable";

} else if(percentage >= 25) {

return "less stable";

} else {

return "unstable";

}

}