CODEWITHSUNDEEP
c++
notvector
notvector

Reputation: 21

For loop printing weird numbers while traversing an array?

I just started learning C++. I learned Java before and I found that C++ is very similar in terms of structure.

Here is a 2D array and I traverse it and print all the values to make a 3 by 3 grid of 0's. But it prints out weird numbers:

#include <iostream>
using namespace std;

int main() {

    int board[3][3];
    for (int i = 0; i < 3; ++i) {
        for (int j = 0; j < 3; ++j) {
            cout << board[i][j] << " ";
        }
        cout << "\n";
    }

}

This prints out:

0 0 0 
0 -13088 0 
-13168 0 -12816

Edit: Thank you! I didn't know that C++ needed initialization. Arrays in Java are stored with 0's by default. Will keep this in mind while learning!

Upvotes: 0

Views: 197

Answers (1)

Jagan
Jagan

Reputation: 111

initialization is missing

int board[3][3] = {{1,2,3},{1,2,3},{1,2,3}};

output

1 2 3 
1 2 3 
1 2 3

Upvotes: 2

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