读写文件

#include <iostream>#include <fstream>#include <assert.h>#include <map>using namespace std;int stupidKmp(const char* dest, const char* src, int pos){    int i=pos;    int j=0;    while(dest[i+j] && src[j])    {        if(dest[i+j]==src[j])        {            j++;        }        else        {            i++;            j=0;        }    }    if(src[j]=='\0')    {        return i;    }    else    {        return -1;    }}int main(){    map<int, int>mymap;    char src[]="abc";    int H=1;    ifstream readfile("./find.cpp",ios::in);    ofstream write;    write.open("./newfind.cpp");    string line;    if(! readfile)    {        assert(false);//fail open    }    while(! readfile.eof())    {        getline(readfile,line);        write<<line.c_str()<<endl;        int V=stupidKmp(line.c_str(),src,0);        if(V != -1)        {            mymap.insert(make_pair(H,V));        }        H++;    }    readfile.close();    write.close();    for(map<int ,int>::iterator iter=mymap.begin(); iter!=mymap.end(); iter++)    {        int first = iter->first;        int second=iter->second;        cout<< "row:"<<first<<" "<<"col:"<<second<<endl;    }    return 0;}find.cppaasssdafaabcdfadfaffsdfafefaefaabcsdfefasafefaseascabcasefweaerfawefasabefaeaeertawefabcasefaweaererawfaabcwf3aefe3faaabcwfweabc