DMP - Chapter 8

Character I/O and redirection

• getchar(), putchar()
• Buffers
• Files, streams, and keboard input
• The EOF
• Redirection and files
• ccommand() and console.h

  #include <stdio.h>
  #include <console.h>
  int main(int argc, char *argv[])
  {
    int i;
    argc = ccommand(&argv);
    for (i = 0; i < argc; i++)
      printf("%d. %s\n", i, argv[i]);
    return 0;
  }
  

• assert() and assert.h

  #undef NDEBUG
  /* Make sure that assert() is enabled */
  #include <assert.h>
  #include <stdio.h>
  int main(void)
  {
    int x = 100, y = 5;
    printf("assert test.\n");
    /*This assert will output a message and abort the program */
    assert(x > 1000);
    printf("This will not execute if NDEBUG is undefined\n");
    return 0;
  }
  /* Output:
  assert test.
  foo.c:12 x > 1000 -- assertion failed
  abort -- terminating
  */