C Language Strings string formatted data read/write
Example
Write formatted data to string
int sprintf ( char * str, const char * format, ... );
use sprintf function to write float data to string.
#include <stdio.h>
int main ()
{
char buffer [50];
double PI = 3.1415926;
sprintf (buffer, "PI = %.7f", PI);
printf ("%s\n",buffer);
return 0;
}
Read formatted data from string
int sscanf ( const char * s, const char * format, ...);
use sscanffunction to parse formatted data.
#include <stdio.h>
int main ()
{
char sentence []="date : 06-06-2012";
char str [50];
int year;
int month;
int day;
sscanf (sentence,"%s : %2d-%2d-%4d", str, &day, &month, &year);
printf ("%s -> %02d-%02d-%4d\n",str, day, month, year);
return 0;
}
