reading in a file
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i would like to read some values in a text file and use these values as object coordinate components in my application. the function that reads the file returns a char table.
for instance : if a file contains a value of -1.0f
the reading function will return a char table organised like that:
table[0]=-
table[1]=1
table[2]=.
table[3]=0
table[4]=f
As you can see, i can't use these values like that.
I'm looking for a method which could allow me to transform theses char and recover the real value ?
What language do you use?
For C, there's the strtol()/strtof() and the (f)scanf functions.
For C, there's the strtol()/strtof() and the (f)scanf functions.
Writing a function or method to do this yourself is trivial and would be a good excercise. Unfortunately I can't offer any direct solution though as I have always used my own functions for this.
I am unsure whether or not the strtol()/strtof() functions are part of the standard and may be undefined by the standard.
I am unsure whether or not the strtol()/strtof() functions are part of the standard and may be undefined by the standard.
1) open file
2) copy whole contents into one string container
hope this helps:
#include <fstream>//copy file to existing_stringstd::ifstream config( para_configPath.c_str() );if(!config) print::Instance().Error( "no_file", para_configPath );else{ std::ifstream file(filename); existing_string.assign(std::istreambuf_iterator< char >(file), std::istreambuf_iterator< char >());config.close();or
use your i/o class and convert it. (probably will be slower than the above)for( int i=0; i<Table.length(); i++ ) somestring+=Table;std::cout << somestring;hope that was helpful.
Hmm... I think you are making some model file format or something. Sorry but why can't you just:
[SOURCE]float x;ifstream fin("c:\\blablabla.txt");while (fin.good()) { fin >> x; }[/SOURCE]This topic is closed to new replies.
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