我在创建要在文件中读取的函数时遇到问题
I'm having trouble creating a function to read in a file
我真的不知道该怎么做。它用逗号分隔。我的所有其他函数都可以工作,但这一点我似乎无法创建读取函数。有人能帮忙吗?文件如下所示。。
170, Abelia, Glossy Abelia x grandiflora, Caprifoliaceae
222, Almond, Dwarf Russian Prunus tenella, Rosaceae
85, Almond, Halls Hardy Prunus dulcis, Rosaceae
200, Apple, Early Harvest Malus x domestica, Rosaceae
246, Apple, Lodi Malus x domestica, Rosaceae
121, Apple, Red Delicious Malus x domestica, Rosaceae
225, Apple, Red Jonathan Malus x domestica, Rosaceae
114, Apple, Stayman Winesap Malus x domestica, Rosaceae
148, Apple, Yellow Delicious Malus x domestica, Rosaceae
77, Apricot, Early Golden Prunus armeniaca, Rosaceae
138, Apricot, Moorpark Prunus armeniaca, Rosaceae
84, Arborvitae Nigra American, Thuja occidentalis Nigra, Cupressaceae
79, Arborvitae Woodward Globe, Thuja occidentalis Woodwardii, Cupressaceae
247, Arborvitae, American Thuja occidentalis, Cupressaceae
93, Arborvitae, Emerald Thuja occidentalis, Emerald, Cupressaceae
144, Arborvitae, Golden Globe Thuja occidentalis, Golden Globe, Cupressaceae
42, Arborvitae, Green Giant Thuja standishii x plicata Green Giant, Cupressaceae
77, Ash, Green Fraxinus pennsylvanica, Oleaceae
208, Ash, White Fraxinus americana, Oleaceae
98, Aspen, Quaking Populus tremuloides, Salicaceae
140, Azalea Formosa, Azalea indica Formosa, Ericaceae
127, Azaleas Mollis Hybrid, Orange Rhododendron x kosteranum, Ericaceae
181, Azaleas Mollis Hybrid, Pink Rhododendron x kosteranum, Ericaceae
146, Azaleas Mollis Hybrid, Red Rhododendron x kosteranum, Ericaceae
248, Azaleas Mollis Hybrid, White Rhododendron x kosteranum, Ericaceae
127, Azaleas Mollis Hybrid, Yellow Rhododendron x kosteranum, Ericaceae
158, Baldcypress, Taxodium distichum, Taxodiaceae
41, Beautybush, Kolkwitzia amabilis, Caprifoliaceae
164, Beech, American Fagus grandifolia, Fagaceae
78, Beech, European Fagus sylvatica, Fagaceae
231, Birch, Paper Betula papyrifera, Betulaceae
6, Birch, River Betula nigra, Betulaceae
118, Birch, Yellow Betula alleghaniensis, Betulaceae
200, Black Tupelo (Black Gum), Nyssa sylvatica, Cornaceae
215, Boxwood (Common), Buxus sempervirens, Buxaceae
119, Boxwood (Korean), Buxus sinica var insularis, Buxaceae
144, Boxwood Green Velvet, Buxus sinica var insularis x B. sempervirens Green Velvet, Buxaceae
30, Buckeye, Red Aesculus pavia, Hippocastanaceae
15, Buckeye, Yellow Aesculus flava (octandra), Hippocastanaceae
9, Butternut (White Walnut), Juglans cinerea, Juglandaceae
90, Camellia, Camellia sasanqua, Theaceae
不确定读取数据后要对数据做什么,但这会将每一行放入一个向量中。另外请注意,要使其工作,您需要更改argc。。。在Xcode中执行此操作时,您将进入产品菜单,然后进入方案,编辑方案,单击+并键入文件的路径
#include <iostream>
#include <iomanip> // for setw() and ws
#include <string>
#include <fstream>
#include <cstdlib>
#include<vector>
using namespace std;
/* function prototype(s) */
void addContents(ifstream&);
int main(int argc, char* argv[])
{
if (argc < 2) {
cerr << "Usage: " << argv[0] << "/path/to/your/file" << endl;
exit (1);
}
ifstream datafile {argv[1]}; /* first arg is filename */
if (!datafile.is_open()) {
cout << "Can't read input from " << argv[1] << endl;
exit (1);
}
addContents(datafile);
datafile.close();
return 0;
}
void addContents(ifstream& ff){
vector<string> fileContents;
string currentLine;
while(getline(ff, currentLine)){
fileContents.push_back(currentLine);
}
for (int i = 0; i<fileContents.size(); i++){
cout << fileContents.at(i) << endl;
}
}
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