Read write data

This program is to read and write into a file

#include <stdio.h>
//read $& write file standardatm.txt. read only alt, temp, pressure
main( ) 
{
	FILE *atmfile, *fpt;
	char alt[10],temp[10],pres[10] ;
	float a, t, p;
	char dummy[10];
	int k=0, i=0;
	
	atmfile = fopen("standardatm.txt","r");
	fpt=fopen("atm_val1.xls", "w");
    fprintf(fpt,"This is an output file\n");
                

	for(k=0;k<98;k++)
	{
	
		fscanf(atmfile,"%s",dummy);

    }

	fscanf(atmfile,"%s %*s %*s %*s %s %s %*s %*s %*s %*s %*s ",alt,temp,pres);
	printf("%s %s %s\n",alt, temp, pres);
	fprintf(fpt,"%s(km) \t %s(K) \t %s(Nm^-2) \n",alt, temp, pres);
	for (i=0;i<42;i++)
	{
	fscanf(atmfile,"%f %*f %*f %*f %f %f %*f %*f %*f %*f %*f \n ", &a, &t,&p);
	printf("%4.1f %4.1f %6.f \n",a, t, p);
	fprintf(fpt,"%4.1f \t %4.1f \t %6.f \n",a, t, p);
	} 
	fclose(atmfile);
	fclose(fpt);
}