如何使该数组填充我的输入值？

Question

I'm trying to populate an array that I'm hoping is "dynamic", so that I can input as many entries into it as I need at runtime. However, the array, to which I presume the pointer NthTeam is pointing to, is not populating:

int* NthTeam = NULL;    

NthTeam = (int*)realloc(NthTeam,(playerCounter*STND_NO_GAMES)*sizeof(int));

// loops through each player's standard number of games
for (int i = 1; i <= STND_NO_GAMES; i++) {
    //input the score into the remalloced array
    cout << "Enter player " << playerCounter << "'s score " << i << ": ";
    cin >> inputValue;
    NthTeam[((playerCounter-1)*STND_NO_GAMES+(i-1)))] = SanityCheck(inputValue);
 }

However, when I use cin >> NthTeam[(playerCounter - 1) * STND_NO_GAMES + (i - 1)] in my code, it does work...the array populates.

I was led to believe from this link that you could use NthTeam just as you would a regular array, but I don't think that's what's happening here. The reason I can't just use cin is because I'm supposed to be performing a validity check on the input before allowing it into the array.

I'm very lost Googling for answers; much of it is too complex for where I am now.

Answer 1

Assuming you are programming in C++, the standard library is there to help. For instance: std::vector . Here's a brain-dead modification, and be sure to #include <vector> :

std::vector<int> NthTeam;    

// loop through each player's standard number of games
// inputting the score into the vector

for (int i = 1; i <= STND_NO_GAMES; i++) {
    cout << "Enter player " << playerCounter << "'s score " << i << ": ";
    cin >> inputValue;
    NthTeam.push_back(SanityCheck(inputValue));
}

You do need to think about what will happen when invalid input is entered (like entering a score of "tomato"). Consider how this will affect the error status of cin , what it will do if you try to read another integer from it when the last attempt yielded an error, and what inputValue will be.

It may be the case that you still need a "SanityCheck"...but it may be able to take for granted that it only needs to check integers.