3

Copy the input flow into the output flow

  1. #include <stdio.h>
  2.  
  3. main() {
  4.     int c;
  5.  
  6.     while ( (c = getchar()) != EOF )
  7.         putchar(c);
  8. }
$ gcc -o fcopy fcopy.c
$ ./fcopy < fcopy.c 
#include <stdio.h>

main() {
	int c;

	while ( (c = getchar()) != EOF )
		putchar(c);
}
$ ./fcopy < fcopy.c > fcopy2.c
$ cat fcopy2.c

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