C Programming Tutorial
In the C Programming Language, the fscanf function reads formatted output from stream.
Syntax
The syntax for the fscanf function in the C Language is:
int fscanf(FILE *stream, const char *format, ...);
Parameters or Arguments
stream
The stream where the output will be read.
format
Describes the input as well as provides a placeholder to insert the formatted string. Here are a few examples:
Format | Explanation | Example |
---|---|---|
%d | Reads an integer | 10 |
%f | Reads a floating-point number in fixed decimal format | 20.500000 |
%.1f | Reads a floating-point number with 1 digit after the decimal | 20.5 |
%e | Reads a floating-point number in exponential (scientific notation) | 2.050000e+01 |
%g | Reads a floating-point number in either fixed decimal or exponential format depending on the size of the number | 20.5 |
Returns
The fscanf function returns the number of characters that was read and stored. If an error occurs or end-of-file is reached before any items could be read, it will return EOF.
Required Header
In the C Language, the required header for the fscanf function is:
#include
Applies To
In the C Language, the fscanf function can be used in the following versions:
- ANSI/ISO 9899-1990