How do u scan a floating number from a file?
ChrisXxX 0 Newbie Poster
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Jump to Postfscanf(FilePointer, "%f", &variableName);All the scanf() family of functions are subject to quitting the first time they receive data that they aren't set up to handle. It's important to check their return value to see if it actually worked or not, (it returns the number of items …
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Adak 419 Nearly a Posting Virtuoso
fscanf(FilePointer, "%f", &variableName);All the scanf() family of functions are subject to quitting the first time they receive data that they aren't set up to handle. It's important to check their return value to see if it actually worked or not, (it returns the number of items it has successfully handled), and it should only be used on data that is FORMATTED properly. Data that variies from one week to the next, is not a good candidate for fscanf().
jephthah commented: well said +6
Ancient Dragon 5,243 Achieved Level 70 Team Colleague Featured Poster
Depends on whether its of type float or double. Floats are "%f" but doubles are "%lf". I think long doubles would be "llf", which is a little like long long int (64-bit integers).
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