Reading into a struct

[fauxdiscours]

I'm supposed to write a reading function for a PPM file that saves the r g b content to a vector vector of the pixel. Can anyone help me fix this function? Line 74 is where I've tried something (with no luck). Thanks for your help.

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

struct Pixel {
	int red, green, blue;
	Pixel();
	Pixel(int r, int g, int b);
};

class Picture {
	vector<vector<Pixel> > pic;
	int rows;
	int columns;
	int maxIntensity;
public:
	Picture();
	bool readPpmFile(string inputFile);
	int writePpmFile(string outputFile);
	void vFlip();
	void hFlip();
	
};

int main(int argc, char *argv[]) {

	if(argc < 3){
		cout << "usage: inputfile outputfile";
		return 0;
	}
	
return 0;
}

Pixel::Pixel(){}

void Picture::vFlip(){
	Pixel tmp;
	for(int i = 0; i < rows/2; i++){
		for(int j = 0; j < columns/2; j++){
			tmp = pic[i][j];
			pic[i][j] = pic[i][columns-j-1];
			pic[i][columns-j-1] = tmp;
		}
	}
}

void Picture::hFlip(){
	vector<Pixel> tmp;
	for(int i = 0; i < rows/2; i++){
		tmp = pic[i];
		pic[i] = pic[rows - i -1];
		pic[rows - i - 1] = tmp;
	}
}

bool Picture::readPpmFile(string inputFile){
	ifstream infile;
	string tmp;
	int r, g, b;
	
	infile.open(inputFile.c_str());
	
	if(infile.fail()){
		cout << "Failed to open " << inputFile << endl;
		return false;
	}
	
	infile >> tmp;
	infile >> columns >> rows;
	while(infile >> r >> g >> b){
		Pixel::Pixel(int r, int g, int b);
		
		}
	return true;
}

int Picture::writePpmFile(string outputFile) {
	ofstream outfile;
	
	if(rows == 0) return -1;
	
	outfile.open(outputFile.c_str());
		if (outfile.fail()){
			cout << "Failed to open " << outputFile << endl;
			return -2;
	}
	outfile << "P3" << endl;
	outfile << columns << " " << rows << endl;
	outfile << maxIntensity << endl;
	
	for(int i = 0; i < rows-1; i++){
		for(int j = 0; j < columns - 1; j++){
			outfile << pic[i][j].red << " " << pic[i][j].green << " " << pic[i][j].blue << endl;
		}
	}
	return 0;
}

[Thomas1965]

	
while(infile >> r >> g >> b)
{
   Pixel::Pixel(int r, int g, int b);
}

What do you want to do ?

Maybe create a pixel struct ?

In this case use

	
while(infile >> r >> g >> b)
{
   Pixel pixel(r, g, b);
   // use pixel
}

BTW.
If you have a default constructor let him initialize the variables:

Pixel::Pixel()
{
   red = green = blue = 0;
}