Updated: April 19, 2023 |
Scan input from a stream
#include <stdio.h> int fscanf( FILE* fp, const char* format, ... );
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The fscanf() function scans input from the stream specified by fp, under control of the argument format.
The number of input arguments for which values were successfully scanned and stored, or EOF if the scanning reached the end of the input stream before storing any values (errno is set).
Scan a date in the form Friday March 26 1999:
#include <stdio.h> #include <stdlib.h> int main( void ) { int day; int year; char weekday[10]; char month[10]; FILE *in_data; in_data = fopen( "file", "r" ); if( in_data != NULL ) { fscanf( in_data, "%10s %10s %d %d", weekday, month, &day, &year ); printf( "Weekday=%s Month=%s Day=%d Year=%d\n", weekday, month, day, year ); fclose( in_data ); return EXIT_SUCCESS; } return EXIT_FAILURE; }
Safety: | |
---|---|
Cancellation point | Yes |
Interrupt handler | No |
Signal handler | No |
Thread | Yes |