Allocate Memory Dynamic Cally Using Malloc () And Free Memory Using Free ()

/*

    author: Creativecub

*/

 

#include <stdio.h>

 

int main()

{

    int n,i,*ptr,sum=0;

    printf("Enter number of elements: ");

    scanf("%d",&n);

 

    //memory allocated using malloc

    ptr=(int*)malloc(n*sizeof(int));

    if(ptr==NULL)

    {

        printf("Error! memory not allocated.");

        return 0;

    }

 

    printf("Enter elements of array: \n");

    for(i=0;i<n;++i)

    {

        scanf("%d",ptr+i);

        sum+=*(ptr+i);

    }

 

    printf("Elements of array are :\n");

    for(i = 0;i<n; i++)

    {

        printf("%d ",ptr[i]);

    }

 

    //freeing memory of ptr allocated by malloc

    free(ptr);

    return 0;

}
















OUTPUT

Enter number of elements: 5
Enter elements of array:
4
8
6
2
1
Elements of array are :
4 8 6 2 1