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#include <stdio.h>#include <stdlib.h>#include <string.h>typedef struct data{	char name[15];	struct data *next;}lnode;void list_add(lnode **np, char *s){	lnode *temp=malloc(sizeof(lnode));	temp->next=*np;	*np=temp;	strncpy(temp->name,s,sizeof(temp->name -1));}void list_print(lnode *np){	while(np!=NULL){		printf("%s\n",np->name);		np=np->next;	}}void cleanup(lnode **np){	while(*np!=NULL){	    lnode *temp=*np;	    *np=(*np)->next;	    free(temp);	}}int main(int argc,char **argv){	lnode *fnode=NULL;	puts("first print");	list_print(fnode);	list_add(&fnode,"koko");	list_add(&fnode,"lala");	puts("second print");	list_print(fnode);	cleanup(&fnode);	return 0;}