What does fscanf return when the value doesn't match the format specifier?

Question

C++ / C#

It is necessary to go through the text file through fscanf and check for a reliable record of real numbers. If there is an incorrectly written number (for example, 55-34 or 98zh11), then determine this and perform certain actions.

Answer 1

Dred Wolf , fscanf returns the number of correctly processed IDs. So if the identifier was "%f", "%e", "%g", "%E", or "%a", then fscanf will return 1 if entered correctly, and any other number (usually 0 or EOF) if not was able to parse the input as a real number.