Multidimensional Arrays-Introduction to Programming-Lab Mannual, Exercises of Computer Programming

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Multidimensional Arrays

 we’ve looked at arrays of one dimension: A single variable specifies each array element.  Arrays can have higher dimensions.

#include using namespace std; const int DISTRICTS = 4; const int MONTHS = 3; int main() { int d, m; double sales[DISTRICTS][MONTHS]; for(d=0; d<DISTRICTS; d++) for(m=0; m<MONTHS; m++) { cout << “Enter sales for district ” << d+1; cout << “, month ” << m+1 << “: ”; cin >> sales[d][m]; }

Multi Dimensional Arrays

 The array is defined with two size specifiers, each enclosed in brackets:  double sales[DISTRICTS][MONTHS];  You can think about sales as a two-dimensional array, laid out like a checkerboard.

Accessing Multidimensional Array Elements  Array elements in two-dimensional arrays require two indexes:  sales[d][m]  Notice that each index has its own set of brackets. Commas are not used. Don’t write sales[d,m] ; this works in some languages, but not in C++.

Initializing Multidimensional Arrays  As you might expect, you can initialize multidimensional arrays.  The only prerequisite is a willingness to type a lot of braces and commas.

LAB TASK

 Write a code to generate a 5 x 5 matrice. Program should ask for every value and then display it in a matrice form.

LAB TASK

 Write a program to add two matrices of 5 x 5 order. Make your logic using loops