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stl string 小练习

2024-07-16 18:21:31   223人阅读

最近没啥可写的  这里写下做的STL小练习 作为记录

 

去除指定字符串中的空格

获取文件名并根据名字创建临时文件，以TMP后缀结尾，已经为TMP后缀结尾文件则创建以XXX后缀结尾文件

读取一行输入内容 并将单词翻转打印

 

// 1111.cpp : 定义控制台应用程序的入口点。//#include "stdafx.h"#include <string>#include <iostream>#include <algorithm>using namespace std;string strArray[5] = {"prog.dat","mydir","hello.","oops.tmp","end.dat"};string TrimSpace(string str){		string::size_type i;	 	while( (i = str.find(" ")) != string::npos )	 	{	 		str.replace(i,1,"");	 	} 	string::iterator newEnd = remove(str.begin(),str.end(),‘ ‘); 	str.erase(newEnd,str.end());	return str;}void ReversPrintWordInLine(){	const string delims(" \t,.;");	string line;	while(getline(cin,line))	{		string::size_type begIdx,endIdx;		begIdx = line.find_first_not_of(delims);		while(begIdx != string::npos)		{			endIdx = line.find_first_of(delims,begIdx);			if(endIdx == string::npos)			{				endIdx = line.length();			}			for(int i = endIdx-1;i >= static_cast<int>(begIdx);--i)			{				cout << line[i];			}			cout << ‘ ‘;			begIdx = line.find_first_not_of(delims,endIdx);		}		cout << endl;	}}void CreateTmpFilename(){	string filename,basename,extname,tmpname;	const string suffix("tmp");	for(int i = 0;i < 5;++i)	{		string::size_type idx = strArray[i].find(".");		if(idx == string::npos)		{			tmpname = strArray[i]+"."+suffix;		}else		{			basename = strArray[i].substr(0,idx);			extname = strArray[i].substr(idx+1);			if(extname.empty())			{				tmpname = strArray[i];				tmpname += suffix;			}else if(extname == suffix)			{				tmpname = strArray[i];				tmpname.replace(idx+1,extname.size(),"xxx");			}else			{				tmpname = strArray[i];				tmpname.replace(idx+1,suffix.size(),suffix);			}		}		cout << strArray[i] << " ==> " << tmpname << endl;	}	cout << endl;}int _tmain(int argc, _TCHAR* argv[]){	string str = TrimSpace(" sdfsf sdfs sdf ");	cout << "remove space " << str << endl << endl;	CreateTmpFilename();	ReversPrintWordInLine();	return 0;}

　　

 


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