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Array of Pointers in C

An array of pointers in C is an array where each element is a pointer to another data type, rather than a data type itself. This allows you to create arrays of various data types dynamically and is particularly useful when dealing with arrays of strings or arrays of complex structures.

#include <stdio.h>

int main() {
int num1 = 10, num2 = 20, num3 = 30;

// Declare an array of integer pointers
int* numArray[3];

// Assign the addresses of integers to the array elements
numArray[0] = &num1;
numArray[1] = &num2;
numArray[2] = &num3;

// Access and print the values using the pointers
for (int i = 0; i < 3; i++) {
	printf("Value at numArray[%d]: %d\n", i, *numArray[i]);
}

return 0;
}

Output:

Value at numArray[0]: 10
Value at numArray[1]: 20
Value at numArray[2]: 30

In this example:

  1. We declare three integer variables: num1, num2, and num3, each with different integer values.
  2. We declare an array of integer pointers int* numArray[3]. This array can hold three pointers to integers.
  3. We assign the addresses of the integer variables to the elements of the numArray using the & operator.
  4. We use a for loop to access and print the values of the integers using the pointers stored in the numArray.

You can create arrays of pointers to other data types (e.g., double, char, or custom structures) following a similar pattern. An array of pointers is a powerful concept that allows you to work with dynamically allocated data and collections of various types efficiently.

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