// Rademaker Robin - Array practice in C++ - 02/O2/2019 // Last edit on 24/02/2019 - [3] Multi-dimensional array with sum at the end #include using namespace std; int main() { cout << "[1] Simple array:"; cout << "\n\n"; // Simple array with size 1O int myArray[10] = {5,10,20,30,40,50,60,70,80,90}; for(int i = 0; i<10; i++){ cout << myArray[i] << ", "; } // Multi-dimensional array with size 3,5 (3 rows, 5 columns) // We use double {{}} for the declaration of a Multi-dimensional array int myArray2[3][5] = {{5,10,20,30,40}, {50,60,70,80,90}, {0,1,2,3,4}}; cout << "\n\n"; //"\n\n" is double endl cout << "[2] Multi-dimensional array:"; cout << "\n\n"; // count is used to write Row 1,2,3 int count = 1; // We use 2 for loops, 1 for the 3 rows and another for the 5 columns // LOOP for ROWS for(int i = 0; i < 3; i++){ cout << "Row " << count << ": "; // LOOP for COLUMNS for(int x = 0; x < 5; x++){ cout << myArray2[i][x]; // prevents printing out last comma behind index 5 if(x < 4){cout << ", ";} } // END LOOP for COLUMNS // new line next row // Row count cout << endl; count++; } // END LOOP for ROWS // In this Multi-dimensional array we have 2 rows and 6 columns // 0-5 columns will be used to store values // index 6 to store the sum of columns 0-5 int myArray3[2][6] = {{1,2,3,4,5}, {5,10,15,20,25}}; cout << "\n\n"; cout << "[3] Multi-dimensional array with sum at the end:"; cout << "\n\n"; // count2 is used to write Row 1,2 int count2 = 1; // We use 2 for loops, 1 for the 2 rows and another for the 6 columns // LOOP for ROWS for(int i = 0; i < 2; i++){ cout << "Row " << count2 << ": "; // LOOP for COLUMNS for(int x = 0; x < 5; x++){ cout << myArray3[i][x]; // this adds up COLUMNS and stores SUM in index 6 myArray3[i][5] += myArray3[i][x]; // prevents printing out last comma behind index 6 if(x < 6){cout << ", ";} } // END LOOP for COLUMNS // after the loop SUM in index 6 is written cout << myArray3[i][5]; // new line next row // Row count cout << endl; count2++; } // END LOOP for ROWS // And to show that we really stored it cout << endl << "Sum of myArray3 0-5 - Row 1: " << myArray3[0][5] << endl << "Sum of myArray3 0-5 - Row 2: " << myArray3[1][5] << endl; return 0; }

Cpp - Array practice in C++ part 1