fstream到数组 [英] fstream to array
问题描述
我在使用数组实现内存分配方面遇到了一些问题。在这种情况下,我得到了一个存储在文本文件中的样本数据:
tri1(1,7,1)(2,8,2)(3, 7,3)
tri2(2,8,2)(5,7,5)(3,7,3)
tri3(5,7,5) (3,5,2)(3,7,3)
tri4(3,7,3)(3,5,2)(1,7,1)
tri5(5,7,5)(5,5,7)(3,5,2)
它是一个三角测量表..所以后来我会绘制它是一个三角形..
i想要读取文本文件并将其传递给数组..包括node1,node2和node3 ..
i就是这样开始的..
int i;
float node1 [3];
float node2 [3];
float node3 [3];
std :: ifstream in(" sample.txt",std :: ios :: in | std :: ios :: binary);
if(!in)
{
std :: cout<< ;无法打开文件<< std :: endl;
返回1;
}
然后我没有想法传递价值...
所以,有人可以帮助我吗?
p / s:无论如何..这不是学校作业..我只是想尝试图形编程 - openGL ..
< blockquote>你可以将完整的文本行读入字符数组,然后使用字符串标记生成器来提取数字,例如
展开 | 选择 | 换行 | 行号
你有几个分隔符错了,试试
展开 | 选择 | Wrap | 行号
i got a little proble to implement memory allocation using array. Here''s the situation, i got a sample data stored in textfile:
tri1 (1,7,1) (2,8,2) (3,7,3)
tri2 (2,8,2) (5,7,5) (3,7,3)
tri3 (5,7,5) (3,5,2) (3,7,3)
tri4 (3,7,3) (3,5,2) (1,7,1)
tri5 (5,7,5) (5,5,7) (3,5,2)
it is a triangulation table.. so later i''ll plot it as a triangle..
i would like to read the text file and pass it into array.. consisting node1, node2 and node3..
i started like this..
int i;
float node1[3];
float node2[3];
float node3[3];
std::ifstream in("sample.txt",std::ios::in |std::ios::binary);
if(!in)
{
std::cout<<"could not open file"<<std::endl;
return 1;
}
then i ran out of idea to pass the value...
so, can anyone help me out?
p/s: anyway.. this is not a school assignment.. i just want to try graphic programming - openGL..解决方案you could read a complete line of text into a character array and then use a string tokenizer to extract the numbers, e.g.
Expand|Select|Wrap|Line Numbers
Expand|Select|Wrap|Line Numbers
you had a couple of your delimiters wrong, try
Expand|Select|Wrap|Line Numbers
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