doc file don gian

#include<conio.h>
#include<stdio.h>
void main()
{
    int a=0, b=0;
    FILE *f;
    f= fopen( "haiso.txt","r");
    //fscanf(f,"%d\n%d",&a,&b);
    fscanf(f,"%d",&a);
    fscanf(f,"\n");
    fscanf(f,"%d",&b);
    printf("a=%d b=%d",a,b);
    fclose(f);
}