C语言太简单？这14道C语言谜题，你能答对几个？

    

     #include
     #include
     int main()
     {
      while(1)
      {
      fprintf(stdout,"hello-std-out");
      fprintf(stderr,"hello-std-err");
      sleep(1);
      }
      return 0;
     }
    

    

     #include
     int main()
     {
      int a = 1,2;
      printf("a : %d\n",a);
      return 0;
     }
    

    

     #include
     int main()
     {
      int i=43;
      printf("%d\n",printf("%d",printf("%d",i)));
      return 0;
     }
    

    

     #include
     int main()
     {
      float a = 12.5;
      printf("%d\n", a);
      printf("%d\n", (int)a);
      printf("%d\n", *(int *)&a);
      return 0;
     }
    

    

     //file1.cint arr[80];
     //file2.cextern int *arr;
     int main()
     {
      arr[1] = 100;
      printf("%d\n", arr[1]);
      return 0;
     }
    

    

     #include
     int main()
     {
      int a=1;
      switch(a)
      {
      int b=20;
      case 1:
      printf("b is %d\n",b);
      break;
      default:
      printf("b is %d\n",b);
      break;
      }
      return 0;
     }
    

    

     #include
     int main()
     {
      char str[80];
      printf("Enter the string:");
      scanf("%s",str);
      printf("You entered:%s\n",str);
      return 0;
     }
    

    

     #include
     int main()
     {
      int i;
      i = 10;
      printf("i : %d\n",i);
      printf("sizeof(i++) is: %d\n",sizeof(i++));
      printf("i : %d\n",i);
      return 0;
     }
    

    

     #include
     #include
     

     #define SIZEOF(arr) (sizeof(arr)/sizeof(arr[0]))
     #define PrintInt(expr) printf("%s:%d\n",#expr,(expr))
     

     int main()
     {
     /* The powers of 10 */
      int pot[] = {
      0001,
      0010,
      0100,
      1000
           };
     

      int i;
      for(i=0;i<SIZEOF(pot);i++)PrintInt(pot[i]);
      return 0;
     }
    

    

     #include
     #define PrintInt(expr) printf("%s : %dn",#expr,(expr))
     int main()
     {
      int y = 100;
      int *p;
      p = malloc(sizeof(int));
      *p = 10;
      y = y/*p; /*dividing y by *p */;
      PrintInt(y);
      return 0;
     }
    

    

     #include
     int main()
     {
      int i = 6;
      if( ((++i < 7) && ( i++/6)) || (++i <= 9));
      printf("%d\n",i);
      return 0;
     }
    

    

     #include
     int main()
     {
      int a=3, b = 5;
      printf(&a["Ya!Hello! how is this? %s\n"], &b["junk/super"]);
      printf(&a["WHAT%c%c%c %c%c %c !\n"], 1["this"],2["beauty"],0["tool"],0["is"],3["sensitive"],4["CCCCCC"]);
      return 0;
     }
    

    

     #include
     int main()
     {
      char dummy[80];
      printf("Enter a string:\n");
      scanf("%[^r]",dummy);
      printf("%s\n",dummy);
      return 0;
     }
    

    

     #include
     #define PrintInt(expr) printf("%s : %d\n",#expr,(expr))
     int FiveTimes(int a)
     {
      int t;
      t = a<<2 + a;
      return t;
     }
     int main()
     {
      int a = 1, b = 2,c = 3;
      PrintInt(FiveTimes(a));
      PrintInt(FiveTimes(b));
      PrintInt(FiveTimes(c));
      return 0;
     }