如何在main（）c ++中调用构造函数？

Question

I have two classes.

fileInfo.cpp:

#include <iostream>
#include <string>
#include <fstream>
using namespace std;

class fileInfo{

private:

string fileName;
string fileType;

public:
/** 
**/
fileInfo(string s){
    fileName = s;
    fileType = "hellooo";

}
string getName() {
    return fileName;
}
};

main.cpp

#include <iostream>
#include <string>
using namespace std;
int main(int argc, char* argv[]){

fileInfo f("test");
std::cout << f.getName();

}

The fileInfo object "f" is not being initialized and I get an error saying that fileInfo is not in scope. I am using a makefile to compile my code which looks like.

all: main.cpp fileInfo.cpp
    g++ main.cpp fileInfo.cpp -o out

Answer 1

Here's the correct way to do it:

fileInfo.h:

#include <iostream>
#include <string>
#include <fstream>
using namespace std;

class fileInfo{

private:

  string fileName;
  string fileType;

public:

  fileInfo(string s);

  string getName();
};

fileInfo.cpp:

#include "fileInfo.h"

fileInfo::fileInfo(string s){
    fileName = s;
    fileType = "hellooo";
}

string fileInfo::getName() {
    return fileName;
}

main.cpp

#include <iostream>
#include <string>
#include "fileInfo.h"

using namespace std;
int main(int argc, char* argv[]){

  fileInfo f("test");
  std::cout << f.getName();

}