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C Programming Allocate memory for int array

C Programming Allocate memory for int array

#include <stdio.h>
#include <malloc.h>

main() {
    int  *base; 
    int x;    
    int y;
    int cnt=0;
    int sum=0;
    
    printf("how many integers you have to store \n");  
    scanf("%d",&cnt); 
    base = (int *)malloc(cnt * sizeof(int)); 
    printf("the base of allocation is %16lu \n",base);
    
    if(!base) 
        printf("unable to allocate size \n");
    else {    
      for(y = 0; y < cnt; y++)
          *(base+y)=5;
    }
    sum = 0;
     
    for(y = 0; y < cnt; y++)
      sum = sum + *(base+y);
    printf("total sum is %d\n",sum);
    
    free(base);
    
    printf("addr of allocation is %16lu \n",base);
    base = (int *)malloc(cnt * sizeof(int));
    printf("the base of allocation is %16lu \n",base);
    base = (int *)malloc(cnt * sizeof(int));
    printf("the base of allocation is %16lu \n",base);
    base = (int *)calloc(10,2);  
    printf("the base of allocation is %16lu \n",base);
}

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