#include <stdio.h>
#include <stdlib.h>
/*
* Converts an integer array to an array of strings.
*
* Parameters:
* numbers - Input integer array.
* size - Number of elements in the array.
*
* Returns:
* Dynamically allocated array of strings.
* The caller is responsible for freeing the memory.
*/
char **convert_int_array_to_string_array(const int *numbers, size_t size)
{
char **result = malloc(size * sizeof(char *));
if (result == NULL) {
return NULL;
}
for (size_t i = 0; i < size; i++) {
/* Determine required buffer size */
int length = snprintf(NULL, 0, "%d", numbers[i]);
result[i] = malloc((length + 1) * sizeof(char));
if (result[i] == NULL) {
/* Clean up previously allocated memory on failure */
for (size_t j = 0; j < i; j++) {
free(result[j]);
}
free(result);
return NULL;
}
/* Convert integer to string */
snprintf(result[i], length + 1, "%d", numbers[i]);
}
return result;
}
/*
* Frees a string array created by
* convert_int_array_to_string_array().
*/
void free_string_array(char **strings, size_t size)
{
if (strings == NULL) {
return;
}
for (size_t i = 0; i < size; i++) {
free(strings[i]);
}
free(strings);
}
int main(void)
{
int numbers[] = {10, 20, 30, 40, 50};
size_t size = sizeof(numbers) / sizeof(numbers[0]);
char **strings = convert_int_array_to_string_array(numbers, size);
if (strings == NULL) {
fprintf(stderr, "Memory allocation failed\n");
return 1;
}
/* Print the converted strings */
for (size_t i = 0; i < size; i++) {
printf("%s\n", strings[i]);
}
/* Release allocated memory */
free_string_array(strings, size);
return 0;
}
/*
run:
10
20
30
40
50
*/
