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#include <stdio.h>
/* Упражнение 1.13 */
 
main()
 {
int c, i, nword;
nword = i = 0;
 while ((c = getchar()) != EOF)
  if (c != ' ' || c != '\n' || c != '/t')
  ++nword;
else
{
	for (i = 0; i == nword; ++i)
 printf('_');
else
  {
 	printf('/n');
 	i = 0;
 	nword = 0;
  }
 }
}

prog.c:4:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
 main()
 ^~~~
prog.c: In function ‘main’:
prog.c:9:37: warning: multi-character character constant [-Wmultichar]
   if (c != ' ' || c != '\n' || c != '/t')
                                     ^~~~
prog.c:14:9: warning: passing argument 1 of ‘printf’ makes pointer from integer without a cast [-Wint-conversion]
  printf('_');
         ^~~
In file included from prog.c:1:0:
/usr/include/stdio.h:364:12: note: expected ‘const char * restrict’ but argument is of type ‘int’
 extern int printf (const char *__restrict __format, ...);
            ^~~~~~
prog.c:15:1: error: ‘else’ without a previous ‘if’
 else
 ^~~~
prog.c:17:10: warning: multi-character character constant [-Wmultichar]
   printf('/n');
          ^~~~
prog.c:17:10: warning: passing argument 1 of ‘printf’ makes pointer from integer without a cast [-Wint-conversion]
In file included from prog.c:1:0:
/usr/include/stdio.h:364:12: note: expected ‘const char * restrict’ but argument is of type ‘int’
 extern int printf (const char *__restrict __format, ...);
            ^~~~~~

Standard output is empty