i have solved the problem using linked list. the solution is working well on my system's compiler but on codechef it is showing a runntime error. Please tell me what is the problem ASAP. this is my solution:

include<stdio.h>

struct a{ int val; struct a next; }tmp; struct a create_list(struct a,int); int fact(int); void main() { int n1,n2,i,k,f; struct a start,temp; start=(struct a )malloc(sizeof(struct a)); scanf("%d",&n1); for(i=0;i<n1;i++) {="" scanf("%d",&n2);="" f="fact(n2);" start="create_list(start,f);" }="" for(temp="start;temp!=NULL;temp=temp-">next) { printf("\n%d",temp->val); } return(NULL); } int fact(int n4) { if(n4==1) return(1); else if(n4==2) return(2); else return(n4fact(n4-1)); } struct a create_list(struct a start2,int n3) { struct a n,tmp1; n=(struct a*)malloc(sizeof(struct a)); n->val=n3; if(start2==NULL) { n->next=start2; start2=n; } else { for(tmp1=start2;tmp1->next!=NULL;tmp1=tmp1->next); n->next=tmp1->next; tmp1->next=n; } return start2; }