C语言程序设计(谭浩强)第八章详细课后答案.docx

#if 0 /8.1#include#includevoid main() int Common_divisor(int a,int b); int Common_mutiple(int m,int n); int result_1,result_2; int number_1,number_2; printf(Enter number_1 and number_2 value:); scanf(%d,%d,&number_1,&number_2); result_1 = Common_divisor(number_1,number_2); result_2 = Common_mutiple(number_1,number_2); printf(最大公约数：%dn最小公倍数：%dn,result_1,result_2);int Common_divisor(int a,int b) int r = 1; while(r != 0) if(ab) r = a%b; a = b; b = r; if(r = 0) return a; break; else r = b%a; b = a; if(r = 0) return b; break; a = r; int Common_mutiple(int m,int n) int Common_divisor(int a,int b);int temp = 0,result = 0; temp = Common_divisor(m,n);result = (m*n)/temp;return result;#endif#if 0 /8.2#include#includefloat result_1 =0.0,result_2 = 0.0;void main()void Funvtion_1(float a,float b,float temp); void Function_2(float a,float b); float a,b,c; float temp; printf(Enter a,b,c value:); scanf(%f,%f,%f,&a,&b,&c); temp = b*b-4*a*c; if(temp 0) Funvtion_1(a,b,temp); printf(x1 = %.3f,x2 = %.3fn,result_1,result_2); else if(temp 0) printf(此函数没有根！n); else Function_2(a,b); printf(x1 = x2 = %.3fn,result_1); void Funvtion_1(float a,float b,float temp)result_1 = (-b+temp)/(2*a);result_2 = (-b-temp)/(2*a);void Function_2(float a,float b) result_1 = (-b)/(2*a);#endif#if 0 /8.3#include#includevoid main() void Prime(int n); int m; printf(Enter m value:); scanf(%d,&m); Prime(m);void Prime(int n) int i = 0 ,k; k = (int)sqrt(n); for(i = 2; i k) printf(The number %d is a prime!n,n); else printf(The number %d isnt a prime!n,n); #endif#if 0#include#includeint c33;void main()void Function(int b33);int a33 = 1,2,3,4,5,6,7,8,9;int i,j;/int d33;int k = sizeof(a2)/sizeof(int); /列数int n = sizeof(a)/sizeof(int);for(i = 0; i n/k;i+) for(j = 0;j k;j+) printf(%d ,aij); printf(n); Function(a);for(i = 0; i k;i+) for(j = 0;j n/k;j+) printf(%d ,cij); printf(n);void Function(int b33) int i = 0,j = 0;int k = sizeof(b3)/sizeof(int);int n = sizeof(b)/sizeof(int);for(i = 0;i k ;+i) for(j = 0;j k; +j) cji = bij;#endif#if 0#include#include#includevoid main() void Function(char a100,char b100); char a100; extern int b100; int n = sizeof(a); printf(Enter a Array:); gets(a); Function(a,b);void Function(char a,char b) int i = 0; int n = sizeof(a)/sizeof(char); int m = strlen(a); for(i = 0; i m;i+) bi = am-1-i; /printf(put b Array:); /puts(b); for(i = 0;i m;i+) putchar(bi); #endif#if 0 /8.6#include#includevoid main() char a20; char b10; printf(Enter string a value:); gets(a); printf(Enter string b value:); gets(b); strcat(a,b); puts(a);#endif#if 0 /8.6#include#include#includeint a20;void main() void Connect(char a,char b); char b10; printf(Enter string a value:); gets(a); printf(Enter string b value:); gets(b); Connect(a,b);/ puts(a); printf(%s,a);void Connect(char a,char b) int i = 0; int j = 0; while(ai != 0) i+; while(bj != 0) ai+ = bj+; / ai = 0; #endif#if 0/8.7#include#include#includechar b100;void main() void Research_vowel(char a); char a50; printf(Enter string a value:); gets(a); Research_vowel(a); puts(b);void Research_vowel(char a) int i = 0,j = 0; for(; i strlen(a);i+) if(ai = a| ai = e | ai = i | ai = o | ai = u) bj = ai; j+; #endif#if 0/8.8#include#includechar a4;void main() void Divide(int n);int n = 0,i = 0;printf(Enter n value(10000):);scanf(%d,&n);Divide(n);for(;i= 1) c = n/m; b = n%m; m = m/10; ai = c; n = b; i+;#endif#if 0/8.9#include#include#includeint m = 0,n = 0,r = 0,l = 0;void main() void Research_number(char a); char a50; int i = 0; printf(enter string value:); gets(a); /*for(;istrlen(a);i+) printf(%c,ai); */ puts(a); puts(); Research_number(a); printf(字母个数是：%d,数字个数是：%d,空格个数是：%d,其它：%dn,m,n,r,l);void Research_number(char a) int i = 0;for(i = 0;i= a & ai = A & ai 47 & ai 58) n+; else if(ai = 32) r+; else l+; #endif#if 0 /8.10#include#include#includevoid main() void Array(char a); char b20; printf(Enter b string(20):); gets(b); printf(Longest word is : ); Array(b);void Array(char a) int i = 0,place = 0,point = 0,length = 1; /point表示最长单词的开始位置 place表示最长单词最后的一个位置int max = 0,j = 0;int flag = 0; /为0 时是空格 为1时是单词max = length;for(i = 0;i=strlen(a);i+) if(ai != & ai != 0) if(0 = flag) j = i; flag = 1; else length+; /这个题让我做的非常的难过 以后要好好的复习elseflag = 0;if(max length) max = length;point = j;place = i;length = 1; for(i = point;i = place;i+) printf(%c,ai);printf(n);/*int judge_words(char b20)int i = 0,flag = 1; for(i = 0;i = a & ai = A & ai = Z) flag = 1; else flag = 0; */#endif#if 0 /8.11#include#includevoid main() void bubbling(char a); char a10; printf(enter string a value:); gets(a); bubbling(a); puts(a);void bubbling(char a) int i = 0,j = 0;char temp; for(i = 0;istrlen(a) - 1;i+) for( j = 0;j aj+1) temp = aj; aj = aj+1; aj+1 = temp; #endif#if 0 /8.12#include#includevoid main() float Function(float x);float x = 1.5,x1 = 0.0; x1 = Function(x); printf(%.3fn,x1);float Function(float x) float x1; float y,y1; while(fabs(y1)=1e-6) x = x1; y1 = x*x*x+2*x*x+3*x+4; y = 3*x*x+4*x+3; x1 = x - (y1/y); return x1;#endif#if 0/8.13#include#includevoid main()float p(float x,int n); float x = 0.0,result = 0.0; int n = 0; printf(Enter x and n value:); scanf(%f,%d,&x,&n); result = p(x,n); printf(p(x) value :%.3fn,result);float p(float x,int n) float y = 0.0;if(n = 0) y = 0;else if(n = 1) y = x;else y = (2*n-1)*x-p(x,n-1)-(n-1)*p(x,n-2)/n;return y;#endif#if 0/8.14#include#includeint r = 0,l = 0;void main()float* EStudent_aver(float scores105);float* EClass_aver(float scores105);float Maxscore(float scores105);float variance(float scores105);float scores105 = 76,43,46,73,46,34,67,89,32,47,31,68,73,16,87,31,67,31,37,63,16,37,61,67,86,31,34,60,49,29,89,89,87,87,98,97,34,89,42,89,45,67,34,18,64,32,16,87,42,15;float *Student_aver,*Class_aver,Student_max = 0.0,aver_variance = 0.0; int i = 0,j = 0,k = 0;/*char Student_name = Zhanghua Xiaoming Ligang Xiaotao Zhangsan Xiaoqiang CBC Baixu Gongcheng BOBO ;char score_name = Chinese Math English Chemitry WuLi;printf(t);for(i = 0;i strlen(score_name);i+) printf(%c,score_namei);puts();for(i = 0;i strlen(Student_name);i+)printf(%c,Student_namei);if(Student_namei = 32) for(j = 0;j 5;j+) printf( %.0ft,scoreskj);k+;puts();*/*printf(n);for(i = 0; i 10;i+) for(j = 0;j 5;j+) printf( %.0ft,scoresij);puts();*/float scores105;printf(NO. course1 course2 course3 course4 course5n);for(i = 0;i 10;i+) printf(No.%2dt,i+1);for(j = 0;j 5;j+) printf(%.2ft ,scoresij);puts(); Student_aver = EStudent_aver(scores); Class_aver = EClass_aver(scores); Student_max = Maxscore(scores); aver_variance = variance(scores); printf(Student_aver:n); for(i = 0;i 10;i+) printf(%.2f ,Student_averi); printf(nClass_aver:n); for(i = 0 ;i 5;i+) printf(%.2f ,Class_averi); printf(n); printf(The Max Score:n %.2f Name: No.%d , Course: course%dn,Student_max,r,l); printf(Student average Variance: n %.2fn,aver_variance);float * EStudent_aver(float scores105) static float aver10,sum = 0.0;int i = 0,j = 0;for(i = 0;i 10;i+) for(j = 0; j 5; j+) sum += scoresij; averi = sum/5; sum = 0;return aver;float* EClass_aver(float scores105) static float aver_15,sum = 0.0; int i = 0,j = 0;for(j = 0;j5;j+) for(i = 0;i10;i+) sum +=scoresij;aver_1j = sum/10;sum = 0;return aver_1;float Maxscore(float scores105) int i = 0,j = 0;float max = scores00;for(i = 0;i 10;i+) for(j = 0;j 5;j+) if(max scoresij) max = scoresij; r = i + 1; l = j + 1;return max;float variance(float scores105)float* EStudent_aver(float scores105); float s = 0.0; float sum_1 = 0.0,sum_2 = 0.0; float number_1 = 0.0,number_2 = 0.0; float* student_aver; int i = 0,j = 0; student_aver = EStudent_aver(scores); for(i = 0;i10;i+) sum_1 += student_averi*student_averi; sum_2 += student_averi; number_1 = sum_1/10; number_2 = (sum_2/10)*(sum_2/10); s = number_1 - number_2; return s;#endif#if 0 /测试 static#include#includestatic j;void f1() static i = 0; i+;void f2() j = 0; j+;void main() int k = 0; for(k = 0;k 10;k+) f1(); f2(); #endif#if 0/8.16#include#includevoid main() void Change(int n); int m = 0; printf(Enter ox number:); scanf(%x,&m); / printf(%dn,m); Change(m);void Change(int n) /int m;printf(十进制是: %dn,n);#endif#if 0/8.17#include#includevoid main()void Function(int n); int m;printf(Input a integer:);scanf(%d,&m); Function(m);void Function(int n) int i;/* if(n!=0) chi = n%10; temp = n/10; i+; Function(temp); else chi = 0; return ch;*/ i = n/10; if(i != 0) Function(i); putchar(n%10+0); putchar(32);#endif#if 0 /今天是今年的多少天#include#includevoid main() int i = 1,d = 0,sum = 0;int year,month,day;printf(Enter year and month and day(2012/08/19):);scanf(%d/%d/%d,&year,&month,&day);sum = day;for(;imonth;i+) switch(i) case 1: case 3: case 5: case 7: case 8: case 10: case 12: d = 31; break; case 2: if(year%400 = 0 | year%4 = 0 & year%100!=0) d = 29; else d = 28; break; case 4: case 6: case 9: case 11: d = 30;break; sum += d;printf(The %d of The year dates!n,sum);#endif#if 0 /8.15#include#define N 10void main() void Enter_massage(char staff_nameN10,int staff_numberN); void Sort(char staff_nameN10,int staff_numberN);int middle_search(int staff_numberN,int number);int number,temp = 0;char staff_nameN10;int staff_numberN;Enter_massage(staff_name,staff_number);/输入信息Sort(staff_name,staff_number);printf(Enter search staff_number:);scanf(%d,&number); temp = middle_search(staff_number,number);printf(The staff number is : %dn,staff_numbertemp);printf(The staff name is : %sn,staff_nametemp);void Enter_massage(char staff_nameN10,int staff_numberN) int i; for(i = 0;i N;i+) printf(Enter Staff number No.:); scanf(%d,&staff_numberi); fflush(stdin); printf(Input staff name:); gets(staff_namei); void Sort(char staff_nameN10,int staff_numberN) int i,j; int temp1;char tempN10;for(i = 0;i N - 1; i+)for(j = 0;j staff_numberj+1) temp1 = staff_numberj; strcpy(tempj,staff_namej); staff_numberj = staff_numberj+1; strcpy(staff_namej,staff_namej+1); staff_numberj+1 = temp1; strcpy(staff_namej+1,tempj); /*if(staff_numberistaff_numberi+1) temp1 = staff_numberi; staff_numberi = staff_numberi+1; staff_numberi+1 = temp1; */for(i = 0;i N;i+) printf(staff number is : %dn,staff_numberi);printf(staff name is %sn,staff_namei); int middle_search(int staff_numberN,int number) /折半查找法！ int min = 0,high = 0,mid = 0;int i = 0;min = 0;high = N - 1;while(min number) high = mid - 1; else if(staff_numbermid number) min = mid + 1; else return mid; #endif/*fasdfa the world helloint flag=0;flag=1;/letterflag=0;/space*/#if 0 /有问题 输出的是不对的！ 为什么指针值temp+1的值不是指向的name1这一行的首地址 而是+后指向的是name0下一列的地址呢？ #includevoid main() char name510; char temp510; int i = 0;