Answer to Question #201228 in C++ for khosa

Question

Assuming the following declarations: const int NUMROWS = 3; const int NUMCOLS = 4; int val[NUMROWS][NUMCOLS] = {8,16,9,52,3,15,27,6,14,25,2,10}; Which of the following loops correctly outputs each element of the array in row order? 1. for (i = 0; i < NUMROWS; i++) { for (j = 0; j < NUMCOLS; j++) cout << setw(4) << val[i][j]; cout << endl; } 2. for (i = 0; i < NUMROWS; i++) { cout << setw(4) << val[i][j]; cout << endl; } 3. for (i = 0; i < NUMCOLS; i++) { cout << setw(4) << val[i][j]; cout << endl; } 4. for (i = 0; i < NUMROWS*NUMCOLS; i++) { cout << setw(4) << val[i][j]; cout << endl; }

Answer 1

There is no correct answer!

You can output each element of the array in row order like this:

#include <iostream>

const int row = 3;
const int col = 4;

int val[row][col] = {8,16,9,52,3,15,27,6,14,25,2,10};

int main() {
  for (int i = 0; i < row; i++)
    for (int j = 0; j < col; j++)
      std::cout << val[i][j] << " ";
  return 0;  
}