CCF历年真题C语言答案

文档鉴赏 题题 1 1 出现次数最多的数 出现次数最多的数 include intmain inti j n s int t 1 inta 10001 0 scanf d for i 0 i a t t s if a s a t t s t s t printf d t return 0 题题 2 2 ISBNISBN 号码号码 include intmain int sum 0 char a 13 0 gets a sum a 0 0 1 a 2 0 2 a 3 0 3 a 4 0 4 a 6 0 5 a 7 0 6 a 8 0 7 a 9 0 8 a 10 0 9 if sum 11 a 12 0 sum 11 10 else if sum 11 10 a 12 X else a 12 sum 11 0 puts a 文档鉴赏 return 0 题题 3 3 相反数 相反数 include intmain inti j n t 0 inta 501 scanf d for i 0 i n i scanf d for i 0 i n 1 i for j i 1 j n j if a i a j 0 t printf d t return 0 题题 4 4 窗口 窗口 include typedef struct window1 int x1 x2 y1 y2 order window void Inputwindow window ws int n inti for i 1 i n i scanf d d d d ws n i order i intgetpos window ws intn intx int y 文档鉴赏 inti for i 0 i ws i x1i ws i 1 ws i ws 0 w intmain inti n m x y pos scanf d d window ws n Inputwindow ws n for i 0 i m i scanf d d pos getpos ws n x y if pos 1 printf IGNORED n else printf d n ws pos order movewindow ws n pos return 0 题题 5 5 相邻数对 相邻数对 include 文档鉴赏 include intmain inti j n t 0 inta 1001 scanf d for i 0 i n i scanf d for i 0 i n 1 i for j i 1 j n j if abs a i a j 1 t printf d t return 0 题题 6 6 画图 画图 include intmain inti j n k t 0 inta 101 4 scanf d for i 0 i n i scanf d d d d for i 0 i 101 i for j 0 j 101 j for k 0 k a k 0 if k n t 文档鉴赏 printf d t return 0 题题 7 7 门禁系统 门禁系统 include intmain inti n s 0 inta 1001 0 scanf d for i 0 i n i scanf d a s printf d a s return 0 题题 8 8 z z 字形扫描字形扫描 include intmain inti j k n inta 500 500 scanf d for i 0 i n i for j 0 j n j scanf d for k 0 k 2 n 1 k for i 0 i n i for j 0 j n j 文档鉴赏 if i j k if k 2 0 printf d a j i else printf d a i j return 0 题题 9 9 图像旋转 图像旋转 include define N 1000 int a N N intmain inti j n m scanf d d for i 0 i n i for j 0 j m j scanf d for j 1 j m j for i 0 i n i if i 0 printf printf d a i m j printf n return 0 文档鉴赏 题题 1010 数字排序 数字排序 include intmain inti j n s 0 int a 1001 0 注意初始化赋值 scanf d for i 0 i0 i i 为从后找起的频数 for j 0 j 1001 j 数组下标从小到大 if a j i 找自己 printf d d n j a j return 0 题题 1111 数列分段 数列分段 include intmain inti n t 0 inta 1001 scanf d for i 0 i n i scanf d for i 0 i n 1 i if a i a i 1 t 文档鉴赏 printf d t 1 return 0 题题 1212 日期计算 日期计算 include intmain int y d day i intmouth 13 0 31 28 31 30 31 30 31 31 30 31 30 31 scanf d d if y 4 0 for i 1 i mouth i d d mouth i if d 0 d mouth i break else break 注意中断 确保月份不出错 printf d n d i d return 0 题题 1313 数位之和 数位之和 include intmain int n sum 0 scanf d while n sum sum n 10 n n 10 文档鉴赏 printf d sum return 0 题题 1414 消除类游戏 消除类游戏 include intmain inti j k n m t 1 inta 31 31 0 intb 31 31 0 scanf d d for i 0 i n i for j 0 j m j scanf d for i 0 i n i for j 0 j 3 for k j t 1 k j k b i k 1 t 1 for j 0 j m j 文档鉴赏 for i 0 i 3 for k i t 1 k i k b k j 1 t 1 for i 0 i n i for j 0 j m j if b i j a i j 0 将找到的赋 0 for i 0 i n i for j 0 j m j printf d a i j printf n return 0 题题 1515 折点计数 折点计数 include intmain inti n t 0 inta 1001 文档鉴赏 scanf d for i 0 i n i scanf d for i 0 i n 2 i if a i 1 a i printf d t return 0 题题 1616 俄罗斯方块 俄罗斯方块 include intmain inti j n int k 0 count 0 down 0 intx 4 y 4 inta 15 10 intb 4 4 for i 0 i 15 i for j 0 j 10 j scanf d for i 0 i 4 i for j 0 j 4 j scanf d scanf d for i 0 i 4 i for j 0 j 4 j if b i j 1 文档鉴赏 x k i y k j k while 1 for i 0 i 4 i if a x i down y i n 1 0 count if count 4 down count 0 else if x i down 14 for j 0 j 4 j a x j down y j n 1 1 break else for j 0 j 4 j a x j down 1 y j n 1 1 break for i 0 i 15 i for j 0 j 10 j 文档鉴赏 printf d a i j printf n return 0 题题 1717 最大波动 最大波动 include include intmain inti n t 0 inta 1001 0 scanf d for i 0 i n i scanf d for i 0 i n 1 i if t abs a i a i 1 t abs a i a i 1 printf d t return 0 题题 1818 火车购票 火车购票 include intmain inti j n t k int flag inta 100 0 intb 20 0 scanf d for i 0 i 20 i 文档鉴赏 b i 5 for i 0 i n i scanf d flag 0 for j 0 j t 有连续座位 for k 1 k 0 无连续座位且有人买票 for j 0 j 1 分散买票 printf d j 5 5 b j 1 t b j printf n 注意换行的情况 return 0 题题 1919 中间数 中间数 include intmain inti j n zuo you int t 1 文档鉴赏 inta 1001 scanf d for i 0 i n i scanf d for i 0 i n i zuo 0 注意初始化 you 0 for j 0 j a j zuo if a i a j you if zuo you t a i printf d t return 0 题题 2020 工资计算 工资计算 include intmain inti t int x 0 scanf d if t 3500 printf d t for i 3600 i 3600 if i x t printf d i break return 0 题题 2121 分蛋糕 分蛋糕 include intmain inti n k int sum 0 t 0 inta 1001 scanf d d for i 0 i n i 文档鉴赏 scanf d for i 0 i k t sum 0 else if i n 1 注意这里的 else if t printf d t return 0 题题 2222 学生排队 学生排队 include intmain inti j n m int p q k scanf d d inta 1001 0 for i 1 i n i a i i for i 1 i m i scanf d d for j 1 j n j if a j p break 注意中断 if q q k 注意循环移动数组中的元素 文档鉴赏 a j k 1 a j k a j q p else if q 0 for k 0 k q k a j k a j k 1 a j q p for i 1 i n i printf d a i return 0 题题 2323 打酱油 打酱油 include intmain int N t 0 scanf d if N 30 t N 10 else if N 50 t N 30 10 4 else t N 50 7 N N 50 50 30 4 N N 50 50 N N 50 50 30 30 10 注意计算 printf d t return 0 文档鉴赏 题题 2424 公共钥匙盒 公共钥匙盒 include struct seq int key int action int time intmain intnum order inti 0 j 0 int w 0 s 0 c 0 scanf d d int keys num struct seqarr order 2 temp for i 0 i num i keys i i 1 for i 0 i order i scanf d d d arr 2 i key w arr 2 i action 0 arr 2 i time s arr 2 i 1 key w arr 2 i 1 action 1 arr 2 i 1 time s c for i 0 i order 2 i for j i 1 j arr j time temp arr i arr i arr j arr j temp else if arr i time arr j time if arr i action 0 arr i arr j arr j temp else if arr i action arr j action arr i arr j arr j temp for i 0 i order 2 i if arr i action 0 for j 0 j num j if keys j arr i key keys j 0 break else for j 0 j num j if keys j 0 keys j arr i key break for i 0 i order 2 i printf d d d n arr i key ar