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initialize 2D vector

Matej 
auto M = 4;	// num of rows
auto N = 3; // num of cols in each row
auto default_value = 1; // default value of all int elements
std::vector<std::vector<int>> matrix(M, std::vector<int>(N, default_value));
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3.5
2
Graham Yates 155 points 

                                    std::vector&lt;vector&lt;int&gt;&gt; d;
//std::vector&lt;int&gt; d;
cout&lt;&lt;&quot;Enter the N number of ship and port:&quot;&lt;&lt;endl;
cin&gt;&gt;in;
cout&lt;&lt;&quot;\Enter preference etc..:\n&quot;;
for(i=0; i&lt;in; i++){ 
cout&lt;&lt;&quot;ship&quot;&lt;&lt;i+1&lt;&lt;&quot;:&quot;&lt;&lt;' ';
    for(j=0; j&lt;in; j++){
    cin&gt;&gt;temp;
    d.push_back(temp);// I don't know how to push_back here!!
    }
}

3.5 (2 Votes)
0
4.43
7
Phil Merrin 80 points 

                                    vector&lt;vector&lt;int&gt; &gt;    v2(8, vector&lt;int&gt;(5));

4.43 (7 Votes)
0
4.67
3
Erik van de Ven 90 points 

                                    // Initializing 2D vector &quot;vect&quot; with 
// values 
vector&lt;vector&lt;int&gt; &gt; vect{ { 1, 2, 3 }, 
                           { 4, 5, 6 }, 
                           { 7, 8, 9 } };

4.67 (3 Votes)
0
4.33
3
Hunter C 95 points 

                                    vector&lt;vector&lt;int&gt; &gt; vec( n , vector&lt;int&gt; (m, 0));

4.33 (3 Votes)
0
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