/**
* 写文件 .dat file.
*
*/
void writingDatFile()
{
int i;
FILE *outFile;
float price[] = { 39.5,3.22,1.03 };
string *descrip;
//char descrip[] = { "苹果","香焦","䔧"}; //,"\0"
//char* str_arr[] = { "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday" };
string descrip2[] = { "苹果","香焦","䔧" };
descrip = descrip2;
outFile = fopen("prices.dat", "w");
if (outFile == NULL)
{
printf("文件不存在！");
ofstream fout(outFile); //创建文件
}
for (i = 0; i < 3; ++i)
{
fprintf(outFile, "%-9s %5.2f\n", descrip[i], price[i]);
}
fclose(outFile);
}
/**
* 读文件 .dat file.
*
*/
void readDatFile()
{
FILE* inFile;
float price;
string* descrip[10];
inFile = fopen("prices.dat", "r");
if (inFile == NULL)
{
printf("\n 文件不存在");
exit(0);
}
while (fscanf(inFile, "%s %f", descrip, &price) != EOF)
{
printf("%-9s %5.2f\n", descrip, price);
}
fclose(inFile);
}