#include using namespace std; #define n 4 // global const // functions prototype void printArray(int array[][n], int r, int c); //bool foundInRow(int* array[], int row, int number); //bool foundInColumn(int array[][n], int column, int number); int main() { int array[n][n] = {}; // zero initializion cout << "The Matrix Initially:\n"; // calling the function printArray(array, n, n); cout << "Insert a number between 1 and " << n * n << ":\n"; for (int i = 0; i < n; i++) { for (int j = 0; j < n; j++) { cin >> array[i][j]; // if invalid while (array[i][j] < 1 || array[i][j] > n * n) { cout << "Invalid! Enter another one between 1 and " << n * n << endl; cin >> array[i][j]; } // if nb repeated // check the row for (int r = i; r <= i; r++) { for (int c = 0; c < j; c++) { while (array[r][c] == array[i][j]) { cout << "repeated, enter another one\n"; cin >> array[i][j]; // if invalid while (array[i][j] < 1 || array[i][j] > n * n) { cout << "Invalid! Enter another one between 1 and " << n * n << endl; cin >> array[i][j]; } } } } // check the column for (int r = 0; r < i; r++) { for (int c = j; c <= j; c++) { while (array[r][c] == array[i][j]) { cout << "repeated, enter another one\n"; cin >> array[i][j]; // if invalid while (array[i][j] < 1 || array[i][j] > n * n) { cout << "Invalid! Enter another one between 1 and " << n * n << endl; cin >> array[i][j]; } } } } } } cout << "The Matrix Filled:\n"; printArray(array, n, n); } // function that prints the array void printArray(int array[][n], int r, int c) { for (int i = 0; i < r; i++) { for (int j = 0; j < c; j++) { cout << array[i][j] << " "; } cout << endl; } cout << endl; } /* bool foundInRow(int* array[], int row, int number) { for (int c = 0; c < ; c++) { if (*(*(array + row) + c)) == number) { return true; } } } bool foundInColumn(int* array[][n], int* column, int* number) { for (column = 0; column < n; column++) { if (array[column] == number) { return true; } } }*/ return 0; }

sudoku box 4x4