除去文本文件每一行的空格&&提取每一行第一个和最后一个字符串

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除去文本文件每一行的空格

python:

files="conky.conf"fin =open(files)fout=open(files+'1','w')for line in fin:    print (line)    fout.write(line.strip()+'\n')

cpp:

#include <ctype.h>      #include<iostream>      #include<fstream>      #include<string.h>      #define bufsize 300    using namespace std;                int main()      {          char buf[bufsize];          ifstream ifs("vimrc.txt",ifstream::in);          ofstream ofs("vimrc-.txt",ofstream::out);          if (ifs.is_open())              cout<<"open file successful"<<endl;          else{        cout<<"open file fail"<<endl;              return 1;       }    char *p=NULL;        int flag;        cout<<"if input 0, only remove space back of line. else remove front and back of line. "<<endl;        cin>>flag;        while(ifs.getline(buf,bufsize))          {              int len =strlen(buf);              while(isspace(buf[len-1]))                  len--;              buf[len]='\0';              if(flag!=0)            {                len=0;                while(isspace(buf[len]))                    len++;                p=buf+len;                cout<< p <<endl;                ofs<< p <<endl;              }            else            {                cout<<buf<<","<<strlen(buf)<<endl;                  ofs<<buf<<endl;              }        }          ofs.close();           ifs.close();          return 0;      }

提取每一行第一个和最后一个字符串

/*************************************************************************    > File Name: str.cpp    > Author: ims    > Created Time: 2017/10/26 18:12:14 ************************************************************************/#include<iostream>#include<fstream>using namespace std;int main(){ifstream ifs("3ss.txt",ifstream::in);    char *p, first[100],buf[200];    int len=0;    while(ifs.getline(buf,200))    {        int tem=0;        len=strlen(buf);            while(isspace(buf[tem])&&tem<len)                tem++;          if(tem==len)            continue;        else            p=&buf[tem];        while(!isspace(buf[tem])&&tem<len)                tem++;        strcpy(first,p);        first[tem]='\0';        if(tem==len)        {            cout<<"1:only one str:"<<first<<endl;            continue;        }        while(isspace(buf[tem])&&tem<len)                tem++;          if(tem<len)        {            tem=len;            cout<< "src:"<<buf<<",len:"<< len <<endl;            while(isspace(buf[tem-1]))                      tem--;                  buf[tem]='\0';             while(!isspace(buf[tem-1]))                tem--;            p=&buf[tem];            cout<<"first str:"<< first <<endl;            cout<<"last str:"<<p<<endl;        }        else             cout<<"2:only one str:"<<first<<endl;    }return 0;}

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