#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <math.h>
#include <time.h>
#include <Windows.h>
typedef struct _CodeData
{
?? ?char ?Signal[20];//最前面的特殊标识符.最大支持20个字符标识符
?? ?int?? ? ?Serial_Number;//序号
?? ?char ?Signal01[20];//标识符
?? ?int ? Signal01_Data;//标识符后的数据
?? ?char ?Signal02[20];//标识符
?? ?int ? Signal02_Data;//标识符后的数据
?? ?char ?Signal03[20];//标识符
?? ?int ? Signal03_Data;//标识符后的数据
?? ?//后面数据可以根据自己的需要不断的累加
}CodeData, * PCodeData;
int WriteStruct(char* tFilePath, PCodeData tObj,
?? ?unsigned int tElementCount//结构体对象数量
)//向文件写数据
{
?? ?FILE* fp = fopen(tFilePath, "w");
?? ?if (!fp)
?? ?{
?? ??? ?perror("file open fail");
?? ??? ?return -1;
?? ?}
?? ?fwrite(tObj, sizeof(tObj[0]), tElementCount, fp);
?? ?fclose(fp);
?? ?return 0;
}
int ReadStruct(char* tFilePath)//从文件读数据
{
?? ?int mData_RowsNumber = 0;//文件内数据行数
?? ?struct _CodeData* mObj = malloc(sizeof(CodeData));//默认分配一个堆区，与下面fread(mObj, 1, sizeof(mObj[0]), fp);第二个形参每次读取一次相对应
?? ?if (!mObj)
?? ?{
?? ??? ?perror("malloc fail");
?? ??? ?return -1;
?? ?}
?? ?FILE* fp = fopen(tFilePath, "r+");
?? ?if (!fp)
?? ?{
?? ??? ?perror("file open fail");
?? ??? ?return -1;
?? ?}
?? ?while (1)
?? ?{
?? ??? ?fread(mObj, 1, sizeof(mObj[0]), fp);
?? ??? ?if (feof(fp))
?? ??? ?{
?? ??? ??? ?break;
?? ??? ?}
?? ??? ?mData_RowsNumber++;
?? ??? ?free(mObj);
?? ??? ?mObj = malloc(sizeof(CodeData) * mData_RowsNumber);//充分利用堆区空间
?? ??? ?if (!mObj)
?? ??? ?{
?? ??? ??? ?perror("malloc fail");
?? ??? ??? ?return -1;
?? ??? ?}
?? ?}
?? ?rewind(fp);
?? ?fread(mObj, sizeof(mObj[0]), mData_RowsNumber, fp);
?? ?for (size_t i = 0; i < mData_RowsNumber; i++)
?? ?{
?? ??? ?printf("%s%d\t%s %d\t%s %d\t%s %d\t\n", (mObj + i)->Signal, (mObj + i)->Serial_Number, (mObj + i)->Signal01, (mObj + i)->Signal01_Data, (mObj + i)->Signal02, (mObj + i)->Signal02_Data, (mObj + i)->Signal03, (mObj + i)->Signal03_Data);
?? ?}
?? ?fclose(fp);
?? ?free(mObj);
?? ?return 0;
}
int main(void)
{
?? ?char* mFilePath = "01-源.txt";
?? ?struct _CodeData mObj[4] = {
?? ??? ?"G", 01, "X", 10, "Y", 20, "Z", 50,
?? ??? ?"G", 03, "X", 20, "Y", 50, "Z", 80,
?? ??? ?"G", 01, "X", 30, "Y", 100, "Z", 200,
?? ??? ?"G", 02, "X", 40, "Y", 200, "Z", 500,
?? ?};
?? ?WriteStruct(mFilePath, mObj, sizeof(mObj) / sizeof(mObj[0]));
?? ?ReadStruct(mFilePath);
?? ?return EXIT_SUCCESS;
}
?
?程序运行结果。