ABAP循环结构练习题

• 1. 求100以内的所有素数。

DATA: num type i VALUE 2,  "1既不是素数也不是合数
      cyc TYPE i.
WHILE num <= 100.
  cyc = 2.
 WHILE cyc < num.
   IF num mod cyc = 0.
     EXIT.              "跳出while循环，因为他不是素数
   ENDIF.
   cyc = cyc + 1.
 ENDWHILE.

 IF num = cyc.               
   WRITE:/ '100以内的素数有:',num.
 ENDIF.
num = num + 1.
ENDWHILE.

• 2. 局部类型,只能本程序使用。

TYPES: BEGIN OF STUDENT,
            NO(14) TYPE N,
            NAME(20) TYPE C,
            BIRTH TYPE D,
       END OF STUDENT.
DATA: LI TYPE STUDENT,
      SI TYPE STUDENT.
LI-NO = '16610413151301'.
LI-NAME = '张三'.
LI-BIRTH = '20190327'.
SI-NO = '26610413151301'.
SI-NAME = '李四'.
SI-BIRTH = '10190327'.
WRITE:/ LI,/ LI-BIRTH,/ SI,/ SI-BIRTH.

• 3. 计算自己的实际年龄

REPORT ZABAP1903_07BASIC02.

*parameters :实现用户自己输入
parameters y0 type i.
parameters m0 type i.
parameters d0 type i.
parameters y1 type i.
parameters m1 type i.
parameters d1 type i.
*start-of-selection和end-of-selection是标准的逻辑流,搜索开始和搜索结束
start-of-selection.
  data: day type i,
        month type i,
        year type i.
*日减日,月减月,年减年,日减日为负向月借1,月减月为负也向年借1
  day = d1 - d0.
  if day < 0.
    m1 = m1 - 1.
  endif.
  month = m1 - m0.
  if month < 0.
    y1 = y1 - 1.
  endif.
  year = y1 - y0.
end-of-selection.
  write:/ year.

• 4. 输出每月的天数

*能被4整出且不能被400整出或能被400整出的是闰年。
PARAMETERS: year TYPE i,
            month TYPE i.
CASE month.
  WHEN 2.
    IF year mod 4 = 0 and year mod 100 <> 0 or year mod 400 = 0 .
      WRITE:/ '29'.
    ELSE.
        WRITE:/ '28'.
    ENDIF.
   WHEN 4 or 6 or 9 or 11.
      WRITE:/ '30'.
   WHEN 1 or 3 or 5 or 7 or 8 or 10 or 12.
      WRITE:/ '31'.
   WHEN OTHERS.
     WRITE:/ '月份输入误'.
ENDCASE.

• 5. 计算最佳情侣身高

REPORT ZABAP1903_07YUJUC07.

PARAMETERS: sex type c,                  "当c类型长度为为1时，可以不用指定，默认值即可
            heigh  type p DECIMALS 2.    "p类型可以不用指定长度
DATA: result type p DECIMALS 2,
     info(30) type c value '请输入正确的身高和性别',
     around type c.
IF sex = 'F' and  1 <= heigh and heigh <= 3 .
  result = heigh * '1.09'.
  WRITE:/ result.
elseif sex = 'M' and 1 <= heigh and heigh <= 3.
  result = heigh / '1.09' .
  WRITE:/ result.
else.
  WRITE:/ info.
ENDIF.

• 6. 字符串处理

REPORT ZABAP1903_07STRINGC05.
*大小写转换
PARAMETERS: letter(5) type c.
TRANSLATE letter TO UPPER CASE.
WRITE:/ letter.

* 输出字符串长度
* 当测试输入空格的时候，空格位于字符串后面时，忽略空格。
PARAMETERS: letter_a(10) type c.
DATA: stren type i.
stren = STRLEN( letter_a ).
WRITE:/ stren.

*合并必须是字符类型，例：c、n
PARAMETERS: sh(5) type c,
            ch(5) type c,
            ph(5) type c.
DATA: result(20) type c.
CONCATENATE sh ch ph into result SEPARATED BY '- '.
WRITE:/ result.

*分割字符串
PARAMETERS: ca(15) type c.
DATA: seg(1) type c VALUE '%',
      data1(5) type c,
      data2(5) type c.
SPLIT ca AT seg INTO data1 data2.
WRITE:/ data1, data2.


data: a type f value '2.3'.
WRITE:/ a.

• 7. 求出[m,n]的和。

PARAMETERS: m TYPE i,
            n type i.
DATA: v TYPE i,
      sum TYPE i VALUE 0.
"定义变量的目的是为了不改变m的值，即不改变求和范围，防止后面要用到最初的m值。
v = m.
IF m <= n.
  WHILE v <= n.
  sum = sum + v.   "
  v = v + 1.
  ENDWHILE.
  WRITE:/ sum.
ELSE.
  WRITE:/ '输入有误！'.
ENDIF.

• 8. 1~100的和

REPORT ZABAP1903_07WHILE.
DATA: num TYPE i VALUE 1,
      sum type i VALUE 0.
WHILE num <= 100.
  sum = sum + num.
  num = num + 1.
ENDWHILE.
WRITE:/ sum.

• 9. 求出所有的水仙花数

* 水仙花数：是一个三位数其各位数字的立方和等于该数本身。例如：3^3 + 7^3+ 0^3 = 370
* 1000以内的水仙花数

DATA: num type i value 100,
      g_num type i,
      s_num type i,
      b_num type i.
WHILE num < 1000 and num >= 100.
  b_num = num div 100.
s_num = num mod 100 div 10.
g_num = num mod 100 mod 10.

  IF num = b_num ** 3 + s_num ** 3 + g_num ** 3.
  WRITE:/ num.
  ENDIF.
  num = num + 1.

ENDWHILE.

• 10. 求使整数数列1，2，3，……，n的和不大于6000的最大正整数n

*求使整数数列1，2，3，……，n的和不大于6000的最大正整数n.  [1,n]  累加公式 n(n + 1) / 2
*DIV：整除忽略余数
*MOD：取模
*/: 除法

*第一种方法
DATA: n TYPE i VALUE 0,
      sum TYPE i VALUE 0.
WHILE sum <= 6000.
  n = n + 1.
  sum = sum + n.
ENDWHILE.
WRITE:/ n,sum.

*第二种方法
*DATA: n TYPE i VALUE 1,
*      sum TYPE i VALUE 0.
*WHILE n > 0.
*  sum = n * ( n + 1 ) / 2.
*  IF sum > 6000.
*    exit.
*  ENDIF.
*  n = n + 1.
*ENDWHILE.
*WRITE:/ 'n:',n,/ 'sum:', sum.

• 11. 求（100,1000）之间所有的能被3整除的偶数的和

求（100,1000）之间所有的能被3整除的偶数的和。
DATA: num TYPE i VALUE 100,
      ou_num TYPE i VALUE 0,
      sum TYPE i VALUE 0.
WHILE: num >= 100 and num <= 1000.
  IF num mod 3 = 0 and num mod 2 = 0.
    WRITE:/ 'num:',num.
   sum = sum + num.
  ENDIF.
num = num + 1.
ENDWHILE.
WRITE:/ 'sum:',sum.

• 12. 按照升序显示出小于输入值的所有正偶数

*5、按照升序显示出小于输入值的所有正偶数
PARAMETERS: num TYPE c LENGTH 4.
DATA: con TYPE i VALUE 0.
WHILE con < num.
  IF con > 0 and con mod 2 = 0.
    WRITE:/ con.
  ENDIF.
  con = con + 1.
ENDWHILE.

• 13. 显示输入的整数值的所有约数

*显示输入的整数值的所有约数
*如果一个整数能被另一个整数整除，那么第二个整数就是第一个整数的约数
PARAMETERS: num TYPE i.
DATA: con TYPE i VALUE 1.
WHILE con <= num.
  IF num mod con = 0.
      WRITE:/ con.
  ENDIF.
  con = con + 1.
ENDWHILE.