将文件读入数据结构

我有一些示例代码，但我无法弄清楚为什么它没有正确读取每一行。逻辑看起来不错，但我怀疑在将文件读入num_of_shades后，我的文件对象中可能存在一些缓冲区问题。

颜色.cpp

#include <iostream>
#include <fstream>
using namespace std;
// holds data for my color(s)
struct Color {
char color_name[255]; // up to 255 characters
int num_of_shades;
char shade[10][255]; // up to 10 shades, 255 characters for each row
};
// holds my Color data structure
struct Box {
Color color[5]; // up to 5 colors
};
int main() {
Box b;
ifstream file;
file.open("colors.dat");
int i=0;
int j=0;
while(!file.eof()) {
// can't have more than 5 colors, (index 0 to 4)
if(i >= 5) {
break;
}       

file.getline(b.color[i].color_name, 255);
file >> b.color[i].num_of_shades;
// can't have more than 10 shades
if(b.color[i].num_of_shades > 10) {
break;
}

for(j=0; j < b.color[i].num_of_shades-1; j++) {
file.getline(b.color[i].shade[j], 255);
}
i++;
j=0;
}
file.close();
// Print out results (comments to the right are the results I want)
cout << b.color[0].color_name << endl; // RED
cout << b.color[0].num_of_shades << endl; // 3
cout << b.color[0].shade[0] << endl; // Light Red
cout << b.color[0].shade[1] << endl; // Brick Red
cout << b.color[0].shade[2] << endl; // Dark Red
cout << b.color[1].color_name << endl; // BLUE
cout << b.color[1].num_of_shades << endl; // 2
cout << b.color[1].shade[0] << endl; // Dark Blue
cout << b.color[1].shade[1] << endl; // Light Blue
}

颜色.dat(我的.dat文件的外观，以及我想打印出数据的方式(

RED
3
Light Red
Brick Red
Dark Red
BLUE
2
Dark Blue
Light Blue

./a.out(程序如何打印出来(

Red
3
Light Red
Brick Red
0