Are the integers in standard input sorted?

#include <stdio.h>

main()

{

int i, /* int in standard input */

after_i, /* number follows i */

eof_flag; /* signal EOF */

scanf("%d", &i);

while( (eof_flag =

scanf("%d", &after_i) ) != EOF ) {

if (i > after_i) /* order OK? */

break; /* if not, terminate */

else /* if OK, update i */

i = after_i;

}

if (eof_flag != EOF)

printf("\nfile is not sorted\n");

else

printf("\nfile is sorted\n");

}

This is program pg115.c.

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