#include <stdio.h>
#include <stdlib.h>
// Function to allocate and initialize a 2D array
int **getPointers(void) {
int **array; // Pointer to an array of int pointers
int i;
// Allocate memory for two int* pointers (representing two rows)
array = calloc(2, sizeof(int *));
// Allocate memory for three integers in each row
array[0] = calloc(3, sizeof(int)); // First row
array[1] = calloc(3, sizeof(int)); // Second row
// Initialize the arrays with example values
for(i = 0; i < 3; i++) {
array[0][i] = 100 + i; // First row: 100, 101, 102
array[1][i] = 200 + i; // Second row: 200, 201, 202
}
// Return the pointer to the 2D array
return array;
}
int main() {
int **pp; // Pointer to hold the returned 2D array
int i;
// Call the function to get the initialized 2D array
pp = getPointers();
// Print the contents of both arrays
for(i = 0; i < 3; i++) {
printf("a[%d] = %d\n", i, pp[0][i]); // Print first row
printf("b[%d] = %d\n", i, pp[1][i]); // Print second row
}
// Free the dynamically allocated memory
free(pp[0]); // Free first row
free(pp[1]); // Free second row
free(pp); // Free the array of pointers
return 0;
}
/*
run:
a[0] = 100
b[0] = 200
a[1] = 101
b[1] = 201
a[2] = 102
b[2] = 202
*/
