C语言第5章习题答案.pdf

1 第 5 章习题参考答案 1 选择题 选择题 1 C 2 B C 3 B 4 B 5 A 6 D 7 D 8 B 2 填空题 填空题 1 0 9 2 float realArray 100 char strArray 16 int intArray 1000 3 运算符 sizeof 4 6 字节 3 阅读程序 写出下面程序的运行结果 阅读程序 写出下面程序的运行结果 1 aa bb cc dd 2 ab c d 3 ahAMa 4 0010 5 1 3 4 5 6 This is the title Name 1 is Rosalinda Name 2 is Zeke The biggest name alpabetically is Zeke Both names are Rosalinda Zeke 7 0 0 0 0 0 0 0 0 0 1 2 3 4 5 6 7 0 2 5 6 8 10 748 14 0 3 6 9 12 15 18 21 0 4 8 12 16 20 24 28 0 5 10 15 20 177 30 35 0 6 12 18 24 30 36 42 0 7 14 21 28 35 42 49 4 程序填空 程序填空 1 a i j a j i 1 2 0 a i a mini maxi i a maxi a mini 3 int a int b b i a i 999 arraycopy a b b i 4 a sizeof ch if 5 编程题 编程题 1 include int main 2 int a 3 4 0 2 9 7 5 13 6 8 27 11 1 3 int i j temp for i 0 j 0 j 4 j temp a 2 i j a 2 i j a i j a i j temp for i 0 i 3 i for j 0 j 4 j printf 3d a i j printf n return 0 2 include int main static int a 6 6 int i j t 1 for i 0 i 6 i t i 1 for j 0 j i 1 j a i j t for i 0 i 6 i for j 0 j 6 j printf 3d a i j printf n return 0 3 include define M 3 define N 4 define R 5 int main static int a M N b N R c M R int i j k 3 printf Matrix a n for i 0 i M i for j 0 j N j scanf d printf Matrix b n for i 0 i N i for j 0 j R j scanf d for i 0 i M i for j 0 j N j for k 0 k R k c i k a i j b j k for i 0 i M i for j 0 j R j printf 3d c i j printf n return 0 4 include define M 5 int main static int a M int i max 1 min 100 maxi mini temp for i 0 i M i scanf d 0 99 间的值 for i 0 i M i if max a i min a i mini i temp a maxi a maxi a mini a mini temp for i 0 i M i printf 3d a i return 0 4 5 include define M 3 define N 4 int main static int a M N int max 1 sumcol 0 sumrow 0 int i j maxi col for i 0 i M i sumrow 0 for j 0 j N j scanf d sumrow a i j if max 0 scanf d for i 0 i M i sumcol a i col 1 printf The dth row s sum is max max d n maxi 1 max printf The dth column s sum d n col sumcol return 0 6 include define M 81 int main static char str M int i count 0 char ch gets str fflush stdin 清空输入缓冲区 以便读入字符数据 printf Which character will be found ch getchar for i 0 i strlen str i if ch str i count printf The number of character c is d n ch count 5 return 0 7 include include define N 10 同学人数 define M 5 课程数 void enter scores void void sort scores int score M int average N 3 void disp scores int score M void histogram int n int score M void printchar int n static int score N M static int aver N 3 第 1 列为均值 第 2 列原始顺序 第 3 列为均值逆序 int main int course enter scores printf n Oringenal Score Start n disp scores score printf n Oringenal Score End n printf n Sorted Score Start n sort scores score aver printf n Sorted Score End n printf nWhich class will be statisticed n scanf d histogram course score system Pause return 0 输入成绩 void enter scores int i j for i 0 i N i for j 0 j M j scanf d aver i 0 score i j for i 0 i N i for j 1 j 3 j 6 aver i j i 成绩排序 void sort scores int score M int average N 3 int i j t int temp tempindex for i 0 i N 1 i for j 0 j N 1 i j if average j 0 average j 1 0 temp average j 0 average j 0 average j 1 0 average j 1 0 temp tempindex average j 2 average j 2 average j 1 2 average j 1 2 tempindex printf n Score1 Score2 Score3 Score4 Score5 n for i 0 i N i t average i 2 for j 0 j M j printf 8d score t j printf n 输出成绩 void disp scores int score M int i j printf n Score1 Score2 Score3 Score4 Score5 n for i 0 i N i for j 0 j M j printf 8d score i j printf n void printchar int n 7 int i for i 0 i n i putchar void histogram int course int score M int i temp int segs 5 0 int sc N for i 0 i N i sc i score i course for i 0 i N i 统计各分段人数 temp int sc i 10 segs temp 6 0 temp 5 成绩 10 将成绩分段 printf nSegment Number n for i 0 i 5 i 输出直方图 每段的人数 printf 3d 5d i 1 10 50 segs i printchar segs i putchar n putchar n 8 include de