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#include<iostream>

using namespace std;

struct Data{

char name[20];

char key[20];

int age;

};

typedef struct Node{

Data data;

Nodr *next;

};Clist;

Clist *createNode(Data data){

Node *node = (Node *)malloc(sizeof(Node));

node->data = data;

node->next = NULL;

return node;

}

Clist *addNode(Node *head,Data data) {

}

int main(){

return 0;

}