fprintf to txt file command
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When I was trying to convert to use fprintf to make a txt file, I came across the following code wile using docsearch to find more information. The code below works fine but I don't understand what the 'w' in the first line of code does. The only thing that I could discern was that the code will not work with it, but what is its specific function?
fileID=fopen('Example.txt','w');
fprintf(fileID,'%s %11s\n','title1','title2');
fprintf(fileID,'%u %13.3e\n',data');
type ('Example.txt')
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回答（1 个）
Geoff Hayes
2015-2-16
1 个投票
Shengyi - the w is the file access type for the file that you are opening. In this case, the w indicates that you are opening a file for writing. If the file doesn't exist, a new one will be created. And if the file already exists, the current contents will be discarded.
See fopen input argument permissions for the different values that can be used when opening a file (for reading, writing, appending, etc.).
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在 帮助中心 和 File Exchange 中查找有关 Standard File Formats 的更多信息
2015-2-16
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