C++11 字符串分割代码示例如下,很显然, 使用了C++11 特性,代码简洁好多
#include <iostream>
#include <string>
#include <vector>
#include <regex>
using namespace std;
//没有使用C++11特性
vector<string> testSplit(string srcStr, const string& delim)
{
int nPos = 0;
vector<string> vec;
nPos = srcStr.find(delim.c_str());
while(-1 != nPos)
{
string temp = srcStr.substr(0, nPos);
vec.push_back(temp);
srcStr = srcStr.substr(nPos+1);
nPos = srcStr.find(delim.c_str());
}
vec.push_back(srcStr);
return vec;
}
//使用C++11特性
vector<string> testSplit11(const string& in, const string& delim)
{
vector<string> ret;
try
{
regex re{delim};
return vector<string>{
sregex_token_iterator(in.begin(), in.end(), re, -1),
sregex_token_iterator()
};
}
catch(const std::exception& e)
{
cout<<"error:"<<e.what()<<std::endl;
}
return ret;
}
int main()
{
vector<string>ret = testSplit("how many credits ?", " ");
for(int i = 0 ; i < ret.size(); ++i)
{
cout<<ret[i]<<endl;
}
return 0;
}
C++ 实现字符串分割函数 split
#include <iostream>
#include <vector>
using namespace std;
vector<string> split( strData )
{
vector<string> vecData;
int nPos = strData.find( "," );
while( nPos > 0 )
{
strTmp = strLine.substr( 0, nPos );
vecData.push_back( strTmp );
strLine.erase( 0, nPos+1 );
nPos = strData.find( "," );
}
vecData.push_back( strData );
return vecData;
}
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