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string formatted data readwrite

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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;
}
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Strings:
* Strings
* Tokenisation strtok strtok r and strtok s
* String literals
* Calculate the Length strlen
* Basic introduction to strings
* Copying strings
* Creating Arrays of Strings
* string formatted data readwrite
* Convert Strings to Number atoi atof dangerous dont use them
* Iterating Over the Characters in a String
* Comparsion strcmp strncmp strcasecmp strncasecmp
* Find firstlast occurrence of a specific character strchr strrchr
* Copy and Concatenation strcpy strcat
* strspn and strcspn
* Safely convert Strings to Number strtoX functions
* Zeroing out a string
* strstr
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