Thread: How to write files more faster in C

Just a thing i want to toy with:

Code:

#define ONE_GIGA	0x40000000
#define ONE_MEGA	0x100000

#include<stdio.h>
#include<stdint.h>
#include<stdlib.h>

int main()
{
    FILE *f=fopen("big_file.dat","wt");
    uint64_t i;
    
    if(f==NULL)
    {
               exit(-1);
    }
    
    for(i=0 ; i < ONE_GIGA ; i++)
    {
		if(0 == i % ONE_MEGA)
		{
			printf("Created %ld.", (long)i / ONE_MEGA);
			fflush(stdout);
			printf("\r");
		}
        fprintf(f,"x");
    }
	
    printf("...Done\n\n");
    fclose(f);
    
    return 0;
}

this application writes one gig of 'x' in big_file.dat. The problem is that it writes them quite slowly. How can I improve my timing ? using fwrite would improve it?
I just want some ideas on how can I make file write more faster. Using sys calls will help ?