Find the errors in following program.

//This program averages three test scores.

//It uses variable perfectScore as a flag.

#include

uisng namespace std;

int main()

{

cout<<"Enter your three test scores and I will ";

<<" average them: ";

int score1, score2, score3,

cin>>score1>>score2>>score3;

double average;

average = (score1 + score2 + score3) / 3.0;

if (average = 100);

perfectScore = true; // set the flag variable

cout<<"Your average is "<

bool perfectScore;

if (perfectScore);

{

cout<<"Congratulations! ";

cout<<"That's a perfect score. ";

return 0;

}