Standard C Libraries
scanf
Description:
Include:
Prototype:
Scans formatted text from stdin .
<stdio.h>
int scanf(const char * format , ...);
Argument:
format
...
format control string
optional arguments
Return Value:
Remarks:
Returns the number of items successfully converted and assigned. If
no items are assigned, a 0 is returned. EOF is returned if an input fail-
ure is encountered before the first.
Each format specifier begins with a percent sign followed by optional
fields and a required type as shown here:
%[*][width][modifier]type
*
indicates assignment suppression. This will cause the input field to be
skipped and no assignment made.
width
specify the maximum number of input characters to match for the con-
version not including white space that can be skipped.
modifier
? 2008 Microchip Technology Inc.
h modifier –
h modifier –
l modifier –
l modifier –
l modifier –
l modifier –
ll modifier –
ll modifier –
L modifier –
used with type d, i, o, u, x, X; converts the value to a
short int or unsigned short int .
used with n; specifies that the pointer points to a short
int
used with type d, i, o, u, x, X; converts the value to a
long int or unsigned long int
used with n; specifies that the pointer points to a long
int
used with c; specifies a wide character
used with type e, E, f, F, g, G; converts the value to a
double
used with type d, i, o, u, x, X; converts the value to a
long long int or unsigned long long int
used with n; specifies that the pointer points to a long
long int
used with e, E, f, g, G; converts the value to a long
double
DS51456E-page 79
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