problem with struct

[megazord]

hello all,
I'm writhing a code with struct and I'm a littel bit confuse.
I get RUN TIME eroor and I don't why exactly.
the program Is fallin in the strcpy() int add studets and add course func.
some can tell me way? what am i doin worng?

Edit: I edit the program, and now its should compile.
I'm doing strcpy ok, cuse i want to read from cname and fullname and write to name and title.

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

typedef struct student {
	char *name;
	int id;
struct clist *courses;
} student;

typedef struct course {
	char *title;
	int number;
struct slist *students;
} course;

typedef struct slist {
	student *info;
	struct slist *next;
} slist;

typedef struct clist {
	course *info;
	struct clist *next;
} clist;

//Prototype Preorderd functaion. 
slist* add_student(slist *students, char *name, int id);
clist* add_course(clist *courses, char *title, int number);
void reg_student(slist *students, clist *courses, int id, int number);
void unreg_student(slist *students, int id, int number);
int is_registered(clist *courses, int id, int number);
int is_consistent(slist *students, clist *courses);

clist *add_course(clist *courses, char *title, int number){
	clist *temp;
                char *cname;

	temp=(clist *)malloc(sizeof(clist));
                cname=(char *) malloc (sizeof(char)*strlen(title));
	strcpy(temp->info->title, cname);
	temp->info->number=number;
	temp->next=courses;
	return temp;
}

slist *add_student(slist *students, char *name, int id){
	slist *temp;
	char *fullname;

	temp=(slist *)malloc(sizeof(slist));
	fullname=(char *) malloc (sizeof(char)*strlen(name));
	strcpy(temp->info->name,fullname);
	temp->info->id=id;
	temp->next=students;
	return temp;
}

void main(){
	char name[1024]="eran bhanam";
	int id_number=21613120;
	char choice;
	slist *p_stu;
	
	p_stu=(slist *)malloc(sizeof(slist));
	printf("Choose:\n\tadd (s)tudent\n\tadd (c)ourse\n\t(r)egister student"
			"(u)nregister student\n\t(i)s registered\n\tis consisten(t)\n\t(q)uit\n");
	scanf("%c",&choice);
	switch(choice){
		case 's':
			printf("Adding new student.\nStudent name:");
			//name = (char*)malloc(sizeof(char)*strlen(str)) ; 
			//strcpy(name,str);
			//gets(name);
			printf("\n");
			printf("Student ID: ");
			//scanf("%d",&id_number);
			p_stu=add_student(p_stu,name,id_number);
			printf("**********");
			printf("Student: %s (%d)",p_stu->info->name,p_stu->info->id);
			printf("Registered to: ");
			printf("**********");
	}
}

[Memloop]

The code doesn't even compile ... Where is cname defined for example? And the way you've used strcpy makes no sense. It's strcpy(DESTINATION, SOURCE), and I suspect you're using it the other way around.

[megazord]

The code doesn't even compile ... Where is cname defined for example? And the way you've used strcpy makes no sense. It's strcpy(DESTINATION, SOURCE), and I suspect you're using it the other way around.

I edit the program.

[Memloop]

strcpy(temp->info->title, cname);

Where is temp->info->title pointing? Who knows, you haven't initialized it. You should assign the malloc'd memory pointer to the temp->info->title pointer before you try to copy data to that memory location with strcpy.

The error in the other function is identical.