Scan input from a character string
#include <stdio.h> int sscanf( const char* in_string, const char* format, ... );
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The sscanf() function scans input from the character string in_string, under control of the argument format. Following the format string is the list of addresses of items to receive values.
The number of input arguments for which values were successfully scanned and stored, or EOF when the scanning is terminated by reaching the end of the input string.
#include <stdio.h> #include <stdlib.h> int main( void ) { int day, year; char weekday[20], month[20]; sscanf( "Thursday February 0025 1999", "%s %s %d %d", weekday, month, &day, &year ); printf( "%s %d, %d is a %s\n", month, day, year, weekday ); return EXIT_SUCCESS; }
produces the following:
February 25, 1999 is a Thursday
Safety: | |
---|---|
Cancellation point | No |
Interrupt handler | No |
Signal handler | Read the Caveats |
Thread | Yes |
It's safe to call this function in a signal handler if the data isn't floating point.