/* Pro129B.c */
/* How to write an external file automatically?                 */
/* Please use fopen( , "w") at write-mode and fprintf().        */

#include<stdio.h>
#include<string.h>
char inline [100];

int main(void)
{
	FILE *infp, *outfp;
	infp = fopen("Infile.txt", "r");        /* File pointer infp opens "infile.txt" as "r"(read)    */
        outfp= fopen("Outfile.txt", "w");       /* File pointer outfp opens "outfile.txt" as "w"(write) */

        while(fgets(inline, 100, infp)!=NULL){     /* Start reading one line each time     */
             printf(inline);                       /* For screen monitor                   */
             fprintf(outfp, "%s", inline);         /* Echo writing out one line each       */
        }                                          /*    time into "Outfile.txt.           */
	fclose(infp);
	fclose(outfp);
	return 0;
}