Memory Leak when Using `strtok` in C with Dynamic Memory Allocation
I'm dealing with I've spent hours debugging this and I'm working with a memory leak when using `strtok` for tokenizing a dynamically allocated string in my C program. The program compiles fine, but when I run it, Valgrind reports multiple memory leaks. Here's a simplified version of my code: ```c #include <stdio.h> #include <stdlib.h> #include <string.h> int main() { char *input = malloc(100 * sizeof(char)); if (input == NULL) { perror("Failed to allocate memory"); return 1; } strcpy(input, "This is a test string."); char *token = strtok(input, " "); while (token != NULL) { printf("Token: %s\n", token); token = strtok(NULL, " "); } free(input); return 0; } ``` When I check for memory leaks using Valgrind, I get the following output: ``` ==12345== LEAK SUMMARY: ==12345== definitely lost: 100 bytes in 1 blocks ==12345== indirectly lost: 0 bytes in 0 blocks ``` I thought that calling `free(input)` at the end would take care of the allocated memory, but it appears that `strtok` is causing an scenario. I also noticed that if I comment out the `strtok` usage, then there are no memory leaks reported. Is there something I'm missing regarding the way `strtok` handles memory? Any insights on how to resolve this or suggestions on better practices for tokenization would be greatly appreciated. How would you solve this? How would you solve this?