/*------------------------------------------------------------------

• ------------------------- scanf 练习 ---------------------------
  ----------------------------------------------------------------- /
  /*

  include

  int main()
  { //代码效果参考：http://www.zidongmutanji.com/bxxx/51858.html

  int a;
  printf("请输入一个整数");
  scanf("%d",&a);
  printf("%d\n",a);
  return 0;
  }/
  /&

  include

  int main()
  {
  int a,b;
  printf("请输入一个加法格式为：1 + 2：");
  scanf("%d + %d",&a,&b);
  printf("%d + %d = %d\n",a,b,a+b);
  }
  /
  /-----------------------------------------------------
  ------------------ sizeof 练习---------------------- --------------------------------------------------- /
  /#include
  char zi_fu = 0;
  unsigned char u_zi_fu = 0;
  printf("变量zi_fu占%d个字节\n",sizeof(zi_fu));
  printf("char类型变量占%d个字节\n",sizeof(char));

  printf("变量zi_fu占%d个字节\n",sizeof(u_zi_fu));
  printf("unsigned char类型变量占%d个字节\n",sizeof(unsigned char));
  zi_fu='a';
  sizeof(zi_fu='b');
  printf("%c\n",zifu);
  /*=======================================================

• 进制练习
  *======================================================
• */
  printf("%d %d %d\n",12,012,0x12);
  printf("%d 0%o 0x%x\n",18,18,18);
  printf("%p\n",18);

/*============================================================

• 二进制练习
  ========================================================= /
  int shu_zi = 300;
  unsigned char zi_fr =shu_zi;
  /*=============================================================

• 操作符练习
  ========================================================== /

  include

  int main()
  { //代码效果参考：http://www.zidongmutanji.com/bxxx/32526.html

  int shu_zi=0,shu_zi1=0;
  printf("15/7=%d\n",15/7);//整数类型的运算只保留整数部分。
  printf("15 %% 7=%d\n",15%7);
  shu_zi = shu_zi1=7;//取决于运算顺序，如果从左往右则变量值会不同，但实际计算机是以右往左赋值。
  printf("%d %d\n",shu_zi,shu_zi1);
  shu_zi +=2;//相当于shu_zi = shu_zi = 2
  printf("shu_zi是%d\n",shu_zi);
  shu_zi = 2+3;//先计算加法在计算自乘，因为乘法和赋值一起使用时，会把优先级降到和赋值一样。
  return 0;
  }
  /------------------------------------------------------------------

• ------------------------- scanf 练习 ---------------------------
  ----------------------------------------------------------------- /
  /*

  include

  int main()
  {
  int a;
  printf("请输入一个整数");
  scanf("%d",&a);
  printf("%d\n",a);
  return 0;
  }/
  /&

  include

  int main()
  {
  int a,b;
  printf("请输入一个加法格式为：1 + 2：");
  scanf("%d + %d",&a,&b);
  printf("%d + %d = %d\n",a,b,a+b);
  }
  /
  /-----------------------------------------------------
  ------------------ sizeof 练习---------------------- --------------------------------------------------- /
  /#include
  char zi_fu = 0;
  unsigned char u_zi_fu = 0;
  printf("变量zi_fu占%d个字节\n",sizeof(zi_fu));
  printf("char类型变量占%d个字节\n",sizeof(char));

  printf("变量zi_fu占%d个字节\n",sizeof(u_zi_fu));
  printf("unsigned char类型变量占%d个字节\n",sizeof(unsigned char));
  zi_fu='a';
  sizeof(zi_fu='b');
  printf("%c\n",zifu);
  /*=======================================================

• 进制练习
  *======================================================
• */
  printf("%d %d %d\n",12,012,0x12);
  printf("%d 0%o 0x%x\n",18,18,18);
  printf("%p\n",18);

/*============================================================

• 二进制练习
  ========================================================= /
  int shu_zi = 300;
  unsigned char zi_fr =shu_zi;
  /*=============================================================
• 操作符练习
  ========================================================== /
  int shu_zi=0,shu_zi1=0;
  printf("15/7=%d\n",15/7);//整数类型的运算只保留整数部分。
  printf("15 %% 7=%d\n",15%7);
  shu_zi = shu_zi1=7;//取决于运算顺序，如果从左往右则变量值会不同，但实际计算机是以右往左赋值。
  printf("%d %d\n",shu_zi,shu_zi1);
  shu_zi +=2;//相当于shu_zi = shu_zi = 2
  printf("shu_zi是%d\n",shu_zi);
  shu_zi *= 2+3;//先计算加法在计算自乘，因为乘法和赋值一起使用时，会把优先级降到和赋值一样。