学校作业，苦逼大一新生，求助
只会写#include <iostream>
#include <fstream>
using namespace std;




int main(int argc, char* argv[])
{
    ifstream infile;
    ofstream outfile;
    infile.open(argv[1]);
    if(infile.fail()){
        cerr<<"Error: Input file cannot be opened"<<endl;
        return -1;
    }
    if(outfile.fail()){
        cerr<<"Error: Output file cannot be opened"<<endl;
        return -1;
    }
   
    int wordCount = 0;
    while(!infile.eof()){
        char c= infile.get();
        if(c==' '){
            wordCount++;
    }}
   
      
   
    return 0;
}
这一部分

不上include string