fscanf() - I/O Function

fscanf() is an I/O function similar to scanf but this function reads information from a stream. The function returns the number of items read on success, it can be zero if a matching failure occurs. If an input failure occurs before reading data could result in EOF.

Syntax:

In the above syntax in the format parameter the function discards the whitespace.All the non-whitespace characters except "%" are skipped, then the next character is read. The "%" indicates a format specifier. The following table lists the format specifier used with "fscanf" function.

Type	Description	Argument
c	Used to read a single character, if the width is more than 1 the function reads all the specified width of characters and stores them in successive locations of the array passed as argument.	char *
d	Represents a decimal integer that mey be preceeded with +/ - sign.	int *
e,E,f,g,G	Used to represent a floating point number containing a decimal point that may have a +/- sign with a e or E character.	float *
o	Specifies an octal value	int *
s	This format type is used to read string of characters until a whitespace is found.	char *
u	Unsigned decimal integer	unsigned int *
x,X	Represents a hexadecimal integer.	int *

Example :

#include <stdio.h> int main() { FILE *fp; char name[100]; fp = fopen("fscanfeg.txt", "r"); fscanf(fp, "%s", name); printf("%s\n", name); fclose(fp); return 0; }

Result :
In the above example the "fscanf()" is used to read the text "Hscripts" from the text file.