setvbuf: sets the buffer for stream to be buffer, with a size of 'size_t size' : setvbuf « stdio.h « C / ANSI-C

1. C / ANSI-C
2. stdio.h
3. setvbuf

setvbuf: sets the buffer for stream to be buffer, with a size of 'size_t size'

    

//Header file:     #include <stdio.h>  
//Declaration:     int setvbuf(FILE *stream, char *buf, int mode, size_t size); 
//Return:          returns zero on success, nonzero on failure. 


// Possible values of mode are _IOFBF, _IONBF, and _IOLBF.
//_IOFBF: full buffering.
//_IOLBF: line buffered.
//_IONBF: no buffering.
  
#include <stdio.h>

int main ()
{
  FILE *fp;

  fp=fopen ("myfile.txt","w");

  setvbuf ( fp , NULL , _IOFBF , 1024 );

  // File operations here

  fclose (fp);

  return 0;
}


           
       

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