Dynamic Memory Allocation for Strings in C

 Dynamic Memory Allocation for Strings in C

Dynamic memory allocation is often used for handling strings of variable lengths. Functions like malloc, realloc, and free can be used to allocate and manipulate memory for strings.

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

int main() {

    char* message = (char*)malloc(20 * sizeof(char));

    strcpy(message, "Hello, ");

    message = (char*)realloc(message, 30 * sizeof(char));

    strcat(message, "world!");

    printf("%s\n", message);

    free(message);

    return 0;

}