[Linux/System] Allocate Space in the Stack

[Malloc]

-Allocate Space in the Heap.

Reference:

void* malloc (size_t size);

#include <stdio.h>
 
int main()
{
    const char *strHello = "Hello Heap Allocate!";
    char *ptrHello;
    ptrHello=(char *)malloc(strlen(strHello)+1);
    strcpy(ptrHello,strHello);
      printf("%s",ptrHello);
      free(ptrHello);        
    return 0;
}

[Alloca]

-Allocate Space in the Stack.

Reference:

void* alloca (size_t size);

#include <stdio.h>
#include <alloca.h>
 
int main()
{
    const char *strHello = "Hello Stack Allocate!";
    char *ptrHello;
    ptrHello=alloca(strlen(strHello)+1);
    strcpy(ptrHello,strHello);
    printf("%s",ptrHello);    
    return 0;
}