#define MAXNUM 100#include<stdio.h>#include<malloc.h>#include<stdlib.h>#define FALSE 0#define TRUE 1#define SPECIAL 1234567typedef int DataType;struct SeqList{DataType element[MAXNUM];int n;};typedef struct SeqList *PSeqList;
DataType retrieve_seq(PSeqList palist,int p){if(p>=0 && p<pali...