8-list_malloc.c

#include <stdio.h>
#include <stdlib.h>

/**
* main: Dynamically allocate an array of size 3
*
* Return: no return.
*/

int main(void)
{
    //Dynamically allocate an array of size 3
    int *list=malloc(3*sizeof(int));
    if(list==NULL)
    {
        return 1;
    }

    //Assign 3 numbers to that array
    list[0]=1;
    list[1]=2;
    list[2]=3;
    //Time passe

    //Allocate new array of size 4
    int *tmp=malloc(4*sizeof(int));
    if(tmp==NULL)
    {
        free(list);
        return 1;
    }

    //Copy numbers from old array into new array
    for (int i=0;i<3;i++)
    {
        tmp[i]=list[i];
    }

    //Add fourth number to new array
    list[3]=4;

    //Free old array
    free(list);

    //Remember new array
    list=tmp;

//Print new array
    for (int i=0;i<4;i++)
    {
        printf("%i\n",list[i]);
    }

    //Free new array
    free(list);
    return 0;
}