Loops thought Multi-Dimensional Arrays

As you may have noticed, assigning each element of the multi-dimensional array is extremely inconvenient. Here we can use loops! In the beginner c++ course, we used for loop to go through one-dimensional array. Let's modify this method and apply it to a 2-dimensional array:


              12345678
            
int x[2][3];
for (int i = 0; i < 2; i++) {
&nbsp;&nbsp;&nbsp;&nbsp;     for (int j = 0; j < 3; j++) {
&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;         x[i][j] = rand() % 10;
&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;        cout << x[i][j] << " ";
&nbsp;&nbsp;&nbsp;&nbsp;     }
}
return 0;

Here we used two for loops, one for going thought rows, and another for columns. Then we assign to each element a random value from 0 to 10 and print the result.

You should always remember the rule: one loop for each array's dimensions.

Var allt tydligt?

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Avsnitt 1. Kapitel 8

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