The malloc is an acronym of "memory allocation". This function allocates the requested size of bytes to a variable and return a pointer of type void.

Syntax:

p=(type cast *)malloc(size)

Here p is a pointer.

Example: Calculate the sum to element using malloc()

#include <stdio.h>
#include <stdlib.h>
int main(){
    int n,i,*p,total=0;
    printf("Enter number of elements: ");
    scanf("%d",&n);
    p=(int*)malloc(n*sizeof(int));  //memory allocated
    if(p==NULL)                     
    {
        printf("No Space available");
        exit(0);
    }
    printf("Enter elements of array: ");
    for(i=0;i<n;++i)
    {
        scanf("%d",p+i);
        total+=*(p+i);
    }
    printf("Sum of elements=%d",total);
    free(p); // used to release space
    return 0;
}