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#include
#include
#include
using namespace std;
void OutPutAnEmptyLine()//输出常州平台运营空行
{
cout<< "\n" ;
}
//读取方式: 逐词读取, 词之间用空格辨别
void ReadDataFromFileWBW()
{
cout<<"逐词读取, 词之间用空格辨别"<<endl;
ifstream fin( "data.txt" );
string s;
while ( fin >> s )
{
cout << "Read from file: " << s << endl;
}
}
//读取方式: 逐行读取, 将行读入字符数组, 行之间用回车换行辨别
void ReadDataFromFileLBLIntoCharArray()
{
cout<<"逐行读取, 将行读入字符数组, 行之间用回车换行辨别"<<endl;
ifstream fin( "data.txt" );
const int LINE_LENGTH = 100 ;
char str[LINE_LENGTH];
while ( fin.getline(str,LINE_LENGTH) )
{
cout << "Read from file: " << str << endl;
}
}
//读取常州微信公众平台方式: 逐行读取, 将行读入字符串, 行之间用回车换行辨别
//相比拟上种办法，该种办法比拟灵敏，引荐运用
void ReadDataFromFileLBLIntoString()
{
cout<<"逐行读取, 将行读入字符串, 行之间用回车换行辨别"<<endl;
ifstream fin( "data.txt" );
string s;
while ( getline(fin,s) )
{
cout << "Read from file: " << s << endl;
}
}
//带错误检测的读取方式
void ReadDataWithErrChecking()
{
string filename = "dataFUNNY.txt" ;
ifstream fin( filename.c_str());
if ( !fin )
{
cout << "Error opening " << filename << " for input" << endl;
exit(- 1 );
}
}
int main()
{
ReadDataFromFileWBW(); //逐词读入字符串
OutPutAnEmptyLine(); //输出空行
ReadDataFromFileLBLIntoCharArray(); //逐词读入字符数组
OutPutAnEmptyLine(); //输出空行
ReadDataFromFileLBLIntoString(); //逐词读入字符串
OutPutAnEmptyLine(); //输出常州微信小程序开发空行
ReadDataWithErrChecking(); //带检测的读取
return 0 ;
}
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