How can I display vector correct? [duplicate] - c++

Question

This question already has answers here:
How to include array in vector [closed]
(2 answers)
Closed 9 years ago.
I have a little problem displaying my vector correct in C++.
It prints like this now:
Spiller navn: A
Score: 1
Spiller navn: A
Score: 2
Spiller navn: A
Score: 3
Spiller navn: B
Score: 1
Spiller navn: B
Score: 2
...
...and so on.
But i want it to print "Spiller" only once, and the "Score" multiple time, so it will look like this:
Spiller navn: A
Score:
1
2
3
Spiller navn: B
Score:
1
2
3
Here is my fill vector function:
void fyldVector(vector<Beregning>& nySpiller) {
string navn;
int score;
cout << "Indtast antal spillere: ";
int antal;
cin >> antal;
//nySpiller.reserve( nySpiller.size() + antal );
for (int i = 0; i < antal; i++) {
cout << "Indtast spiller navn: ";
cin >> navn;
for (int j = 0; j < 3; j++) {
cout << "Indtast score: ";
cin >> score;
Beregning nyBeregning(navn, score);
nySpiller.push_back(nyBeregning);
}
}
cout << endl;
}
And my print vector function:
void printVector(const vector<Beregning>& nySpiller) {
unsigned int size = nySpiller.size();
cout << nySpiller.size() << endl;
for (unsigned int i = 0; i < size; i++ ) {
cout << "Spiller navn: " << nySpiller[i].getNavn() << endl;
cout << "Score: " << nySpiller[i].getScore() << endl;
cout << endl;
}
}

Answer 1

As you did not say what does function getScore and what is its return type then I use the function as it is used in your example.
void printVector( const vector<Beregning> &nySpiller )
{
string navn;
for ( const Beregning &b : nySpiller )
{
if ( navn != b.getNavn() )
{
navn = b.getNavn();
cout << "\nSpiller navn: " << navn << endl;
cout << "Score: " << endl;
}
cout << b.getScore() << endl;
}
}
If your compiler does not support the range based for loop then you can write
void printVector( const vector<Beregning> &nySpiller )
{
string navn;
for ( vector<Beregning>::size_type i = 0; i < nySpiller.size(); i++ )
{
if ( navn != nySpiller[i].getNavn() )
{
navn = nySpiller[i].getNavn();
cout << "\nSpiller navn: " << navn << endl;
cout << "Score: " << endl;
}
cout << nySpiller[i].getScore() << endl;
}
}