超市管理系统完整代码

#include <io.h>
#include <malloc.h>
#include <stdio.h>
#include <stdlib.h>

#define MAX_LEN 256
#define MAX_GOODS 100

typedef enum { OK = 1, ERROR = 0 } Status;
typedef enum { YES = 1, NO = 0 } Bool;

typedef struct {
  int number;
  char partName[MAX_LEN + 1];
  int onHand;
  float price;
} Part;

typedef struct {
  Part *pGoodsInfoBase[MAX_GOODS];
  int partNum;
} GoodsInfoBase;

void PrintInfoOfCopyright(void);
/*Function: Print the information of copyright.*/

void PrintInfoOfInstructions(void);
/*Function: Print the information of instructions.*/

int Search(int searchNumber, GoodsInfoBase *pGoodsInfoBase);
/*Function: To find that whether the specific part exists or not.
            If it existed, return the index location. If not, return -1.
Input: searchNumber,the specific part number,
       pGoodsInfoBase,a pointer point to the goodsInfoBase in the main fuction.
Output: i,the index location of the specific part,
        or -1 if the specific part doesn't exist.*/

Status ReadGoodsInfoFile(char *fileName, GoodsInfoBase *pGoodsInfoBase);
/*Function: To read all of the information about goods from a file.
 Input: The name of a file;
        pGoodsInfoBase,a pointer point to the goodsInfoBase in the main fuction.
Output: The status OK if read successfully or the status ERROR when failed to
read.*/

Status ExitSSOS(char *fileName, GoodsInfoBase *pGoodsInfoBase);
/*Function: End the SSOS program and store all the information of goods into a
file. Input: A name of a new file that will store all the information;
       pGoodsInfoBase,a pointer point to the goodsInfoBase in the main fuction.
Output: The status OK When all the information is successfully stored and end
the SSOS; the status ERROR when failed to do it.*/

Status Insert(Part *pNewPart, GoodsInfoBase *pGoodsInfoBase);
/*Function: To insert the information of a specific part to the goodsInfoBase in
the main fuction. Input: pGoodsInfoBase,a pointer point to the goodsInfoBase in
the main fuction; pNewPart,a pointer point to a new part. Output: The status OK
if the information of the speific part successfully insert to the goodsInfoBase,
        or the status ERROR if goodsInfoBase is full or mallocing failed.
Note: It is required to #include<malloc.h> and #include<stdlib.h>.*/

Status UpdataOnHand(int changeOnHand, GoodsInfoBase *pGoodsInfoBase, int i);
/*Fuction: To change the quantity on hand of a specific part .
Input: changeOnHand, the change on hand of a part;
       pGoodsInfoBase,a pointer point to the goodsInfoBase in the main fuction;
       i,the index location of a part.*/

Status UpdataPrice(float newPrice, GoodsInfoBase *pGoodsInfoBase, int i);
/*Fuction: To change the price of a specific part .
Input: newPrice, the new price of a part;
       pGoodsInfoBase,a pointer point to the goodsInfoBase in the main fuction;
       i,the index location of a part.*/

Status Print(GoodsInfoBase *pGoodsInfoBase);
/*Fuction: To show all the information of the whole goods.
Input: pGoodsInfoBase,a pointer point to the goodsInfoBase in the main fuction.
Output: All the information of the whole goods.*/

Status Delete(int i, GoodsInfoBase *pGoodsInfoBase);
/*Function: To delete a part's information if it exist.
Input: pGoodsInfoBase,a pointer point to the goodsInfoBase in the main fuction.
       i,the index location of a part.*/

Bool IsFull(GoodsInfoBase *pGoodsInfoBase);
/*Function: To see whether the goods is full or not.
Input: pGoodsInfoBase,a pointer point to the goodsInfoBase in the main fuction.
Output: NO when it is not full or YES when it is full.*/

Status PrintInfoOfAPart(int i, GoodsInfoBase *pGoodsInfoBase);
/*Function: To show the information of a part.
Input: pGoodsInfoBase,a pointer point to the goodsInfoBase in the main fuction.
       i,the index location of a part.*/

Bool IsIllegalInput(int scanfReturnValueOfPartNumber,
                    char firstCharacterOfPartName, int scanfReturnValueOfOnHand,
                    int scanfReturnValueOfPrice);
/*Function: To see whether the input is correct or not.
Input: the return value of scanfs and the first character of the part name.
Output: YES or NO.*/

Bool IsIllegalInput(int scanfReturnValueOfPartNumber,
                    char firstCharacterOfPartName, int scanfReturnValueOfOnHand,
                    int scanfReturnValueOfPrice) {
  Bool ret = NO;
  char ch = firstCharacterOfPartName;
  int a = scanfReturnValueOfPartNumber;
  int b = scanfReturnValueOfOnHand;
  int c = scanfReturnValueOfPrice;
  if (!((ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z'))) {
    ret = YES;
  }
  if (a == 0) {
    ret = YES;
  }
  if (b == 0) {
    ret = YES;
  }
  if (c == 0) {
    ret = YES;
  }
  return ret;
}

Status PrintInfoOfAPart(int i, GoodsInfoBase *pGoodsInfoBase) {
  printf("   %d\t\t%s\t\t%d\t\t\t%g\n",
         pGoodsInfoBase->pGoodsInfoBase[i]->number,
         pGoodsInfoBase->pGoodsInfoBase[i]->partName,
         pGoodsInfoBase->pGoodsInfoBase[i]->onHand,
         pGoodsInfoBase->pGoodsInfoBase[i]->price);
  return OK;
}

Bool IsFull(GoodsInfoBase *pGoodsInfoBase) {
  int i;
  i = pGoodsInfoBase->partNum;
  if (i >= MAX_GOODS) {
    return YES;
  }
  return NO;
}

void PrintInfoOfCopyright(void) {
  puts("Welcome to use the Super Supermarket OS(SSOS)!\n");
  puts("Super Supermarket OS Command V1.0, 2017-12-9");
  puts("developed by Rong Yang.");
  puts("All rights reserved.\n");
  return;
}

void PrintInfoOfInstructions(void) {
  puts("Instructions:");
  puts("'i': Insert a part to the base.");
  puts("'d': Delete a part from the base.");
  puts("'s': Search a part and show its information.");
  puts("'u': Update information of a part.");
  puts("'p': Print all the information of the base.");
  puts("'q': Exit the market system and save all the information.\n");
  return;
}

int Search(int searchNumber, GoodsInfoBase *pGoodsInfoBase) {
  int i, ret = -1;
  for (i = 0; i < pGoodsInfoBase->partNum; i++) {
    if (pGoodsInfoBase->pGoodsInfoBase[i]->number == searchNumber) {
      ret = i;
      break;
    }
  }
  return ret;
}

Status ReadGoodsInfoFile(char *fileName, GoodsInfoBase *pGoodsInfoBase) {

  FILE *pGoodsInfoFile;
  FILE *pCleanGoodsInfoFile;
  int i = pGoodsInfoBase->partNum;
  if ((pGoodsInfoFile = fopen(fileName, "r")) == NULL) {
    return ERROR;
  }
  while (!feof(pGoodsInfoFile)) {
    pGoodsInfoBase->pGoodsInfoBase[i] = (Part *)malloc(sizeof(Part));
    if (pGoodsInfoBase->pGoodsInfoBase[i] == NULL) {
      return ERROR;
    }
    fscanf(pGoodsInfoFile, "%d\t\t%[ a-zA-Z]\t\t\t%d\t\t%f",
           &pGoodsInfoBase->pGoodsInfoBase[i]->number,
           pGoodsInfoBase->pGoodsInfoBase[i]->partName,
           &pGoodsInfoBase->pGoodsInfoBase[i]->onHand,
           &pGoodsInfoBase->pGoodsInfoBase[i]->price);
    fgetc(pGoodsInfoFile);
    i++;
    pGoodsInfoBase->partNum++;
  }
  fclose(pGoodsInfoFile);
  pGoodsInfoBase->partNum--;
  if ((pCleanGoodsInfoFile = fopen(fileName, "w")) == NULL) {
    return ERROR;
  }
  fprintf(pCleanGoodsInfoFile, "");
  fclose(pCleanGoodsInfoFile);
  return OK;
}

Status ExitSSOS(char *fileName, GoodsInfoBase *pGoodsInfoBase) {
  FILE *pPrintFile;
  int i, n;
  if ((pPrintFile = fopen(fileName, "a+")) == NULL) {
    return ERROR;
  }
  n = pGoodsInfoBase->partNum;
  for (i = 0; i < n; i++) {
    fprintf(pPrintFile, "%d\t\t%s\t\t%d\t\t%g\n",
            pGoodsInfoBase->pGoodsInfoBase[i]->number,
            pGoodsInfoBase->pGoodsInfoBase[i]->partName,
            pGoodsInfoBase->pGoodsInfoBase[i]->onHand,
            pGoodsInfoBase->pGoodsInfoBase[i]->price);
  }
  fclose(pPrintFile);
  //    for (i = 0; i < n;i++){
  //        free(pGoodsInfoBase->pGoodsInfoBase[i]);
  //        pGoodsInfoBase->pGoodsInfoBase[i] = NULL;
  //    }
  return OK;
}

Status Print(GoodsInfoBase *pGoodsInfoBase) {
  int i;
  printf("Part Number\tPart Name\tQuantity on hand\tPrice\n");
  for (i = 0; i < pGoodsInfoBase->partNum; i++) {
    PrintInfoOfAPart(i, pGoodsInfoBase);
  }
  return OK;
}

Status UpdataOnHand(int changeOnHand, GoodsInfoBase *pGoodsInfoBase, int i) {
  pGoodsInfoBase->pGoodsInfoBase[i]->onHand += changeOnHand;
  return OK;
}

Status UpdataPrice(float newPrice, GoodsInfoBase *pGoodsInfoBase, int i) {
  pGoodsInfoBase->pGoodsInfoBase[i]->price = newPrice;
  return OK;
}

Status Insert(Part *pNewPart, GoodsInfoBase *pGoodsInfoBase) {
  int i;
  i = pGoodsInfoBase->partNum;

  pGoodsInfoBase->pGoodsInfoBase[i] = (Part *)malloc(sizeof(Part));
  if (pGoodsInfoBase->pGoodsInfoBase[i] == NULL) {
    return ERROR;
  }
  *pGoodsInfoBase->pGoodsInfoBase[i] = *pNewPart;
  pGoodsInfoBase->partNum++;
  return OK;
}

Status Delete(int i, GoodsInfoBase *pGoodsInfoBase) {
  int n;
  n = pGoodsInfoBase->partNum;
  free(pGoodsInfoBase->pGoodsInfoBase[i]);
  for (; i < n - 1; i++) {
    pGoodsInfoBase->pGoodsInfoBase[i] = pGoodsInfoBase->pGoodsInfoBase[i + 1];
  }
  pGoodsInfoBase->pGoodsInfoBase[i] = NULL;
  pGoodsInfoBase->partNum--;
  return OK;
}

int main(void) {
  GoodsInfoBase goodsInfoBase;
  goodsInfoBase.partNum = 0;
  char operationCode;
  char fileName[MAX_LEN + 1] = {"C:\\Users\\HP\\Desktop\\GoodsInfoBase.txt"};
  Part NewPart;
  Bool isFull;
  Bool isIllegalInput;
  int searchNumber;
  int i;
  int updataCode;
  int changeOnHand;
  float newPrice;
  int scanfReturnValue[3];

  PrintInfoOfCopyright();
  PrintInfoOfInstructions();
  ReadGoodsInfoFile(fileName, &goodsInfoBase);

  while (1) {

    printf("Enter operation code: ");
    scanf(" %c", &operationCode);

    switch (operationCode) {

    case 'i':
      isFull = IsFull(&goodsInfoBase);
      if (isFull == YES) {
        printf("Goods is full.");
        break;
      }
      while (1) {
        printf("Enter part number: ");
        scanfReturnValue[0] = scanf("%d", &NewPart.number);
        fflush(stdin);
        printf("Enter part name: ");
        gets(NewPart.partName);
        fflush(stdin);
        printf("Enter quantity on hand: ");
        scanfReturnValue[1] = scanf("%d", &NewPart.onHand);
        fflush(stdin);
        printf("Enter price: ");
        scanfReturnValue[2] = scanf("%f", &NewPart.price);
        isIllegalInput =
            IsIllegalInput(scanfReturnValue[0], NewPart.partName[0],
                           scanfReturnValue[1], scanfReturnValue[2]);
        if (!isIllegalInput) {
          break;
        }
        printf("Illegal input!\n");
        fflush(stdin);
      }
      Insert(&NewPart, &goodsInfoBase);
      break;

    case 'd':
      printf("Enter part number: ");
      scanf("%d", &searchNumber);
      i = Search(searchNumber, &goodsInfoBase);
      if (i >= 0) {
        Delete(i, &goodsInfoBase);
      } else {
        printf("Part not found.\n");
      }
      break;

    case 's':
      printf("Enter part number: ");
      scanf("%d", &searchNumber);
      i = Search(searchNumber, &goodsInfoBase);
      if (i >= 0) {
        PrintInfoOfAPart(i, &goodsInfoBase);
      } else {
        printf("Part not found.\n");
      }
      break;

    case 'u':
      printf("Enter part number: ");
      scanf("%d", &searchNumber);
      i = Search(searchNumber, &goodsInfoBase);

      if (i >= 0) {
        printf("Enter what information you want to updata(0: onHand, 1: "
               "price): ");
        scanf("%d", &updataCode);

        if (updataCode == 0) {
          printf("Enter change in quantity on hand: ");
          scanf("%d", &changeOnHand);
          UpdataOnHand(changeOnHand, &goodsInfoBase, i);
        } else if (updataCode == 1) {
          printf("Enter new price: ");
          scanf("%f", &newPrice);
          UpdataPrice(newPrice, &goodsInfoBase, i);
        } else {
          printf("Wrong updata code!");
        }
      } else {
        printf("Part not found.\n");
      }
      break;

    case 'p':
      Print(&goodsInfoBase);
      break;

    case 'q':
      ExitSSOS(fileName, &goodsInfoBase);
      exit(1);

    default:
      PrintInfoOfInstructions();
    }

    fflush(stdin);
    printf("\n");
  }
  return 0;
}