字符个数统计

#include<iostream>

#include<String>

#include<fstream>

#include<stdlib.h>

using namespace std;



int main()

{

    ifstream fin;

    string str,str2;

    cout<<"input the filename:"<<endl;

    cin>>str;

    fin.open(str.c_str(),ifstream::binary|ifstream::in);



    char ch;

    cout<<"input the char to be counted!"<<endl;

    cin>>ch;

    int cnt=0;

    while(!fin.eof())

    {

                     if(fin.get()==ch) cnt++;



    }

    cout<<cnt<<endl;

    cout<<"Total number of""<"is:"<<cnt<<endl;

   ofstream fout;

    cout<<"input the filename to save the value:"<<endl;

    cin>>str2;

    fout.open(str2.c_str(),ofstream::binary|ofstream::out);

    char* ch1;

    itoa(cnt,ch1,10);

    fout.write((char*)ch1,1);

    fout.close();

    fin.close();

    return 0;
}