C程序設(shè)計(jì)第四版譚浩強(qiáng)習(xí)題例題

1、第7章函數(shù)tiincludeOint main()void print_star ();void print_message():print_star ();print_message ();print_star ();return 0;void print_star()printf(“*n)；void print_message()printf(How do you do!n)；xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxHow do you do?從從從冥夫夫夫夫夫關(guān)夫夫冥冥*獎(jiǎng)冥*冥*冥冥冥冥哭冥龔冥箕彼XPress any key to continueint

2、 max(int x,int y)int z;z二xyx:y;return(z);ttincludeOint main ()int max(int x,int y);int a, b, c;printf (please enter two integer number：，z);scanf (%d, %d, &a, &b);c二max (a, b);printf(max is %dn, c);return 0:please enter two integer number： 1 2,3坪 max is 12Press any key to continue例ftincludeO int main

3、()int max(float x,float y);f loat a, b;int c;printf(please enter two integer number:);scanf (%f, %f, &a, &b);c=max (a,b);printf(max is %dn, c);return 0:int max(float x,float y)float z;z二xyx:y;return(z);please enter two in teger n umber- ：1 5,2 G max is 2Press any key to continue.例tiincludeOint main(

4、)float add (float x,float y):f loat a, b, c;printf(please enter a and b:)；scanf (，z%f, %f, &a, &b);c=add(a, b);printf(sum is %fn, c);return 0;float add(float x,float y)float z;z二x+y;return (z);please enter a “nd b：36.6.5 sum is 10.100000P“g any key to continue例ttincludeOint main()int max4(int a, int

5、 b, int c,int d);int a, b, c, d, max;printf (please enter 4 interger number:，z):scanf (，z%d %d %d %d，z, &a, &b, &c, &d);int max4(int a, int b, int c, int d);int a, b, c, d, max;printf(please enter 4 interger number:);scanf (%d %d %d %d”, &a, &b, &c, &d);max=max4 (a, b, c, d);pri ntf (max 二dr/ max);r

6、eturn 0;int max4(int a, int b, int c,int d)int max2(int a, int b);return(max2(max2(max2(a, b), c), d);int max2(int a,int b)return(aba:b);例ttincludeOint main()int age(int n):printf age :%dnz，, age (5);return 0:int age (int n)int c;if(n=l) c=10;else c二age(n-l)+2;return(c);NO.5,age:18P廠gss any key to c

7、ontinuw例遞歸方法求n!ttincludeOint main ()int fac(int n);int n, y;printf(input a interger number:);scanf&n);y二fac(n);printf (%d! =%dn, n, y);return 0;int fac(int n)int f;if(nCA-BC-BA-CB-AB-CA-Cn+1);Press any key to continueint max(int x, int y)return(xyx:y);enter 10 interger numbers： 4 7 0 -3 H 34 67 曲2 3

8、1 -71The largest number is G7 it is the 7th numb廠.Press anu keu to continue例ttincludeOint main ()float average (float array10);float score10, aver;int i;printf(“enter 10 scores:n)；for(i=0;i10;i+)scanf (/z%f，z, &score i);aver=average(score);pri ntf (z average score isaver);return 0:float average(floa

9、t array10)int i;float aver, sum二array0;for (i=l;i10;i+)sumsum+arrayi;aver二sum/10;return(aver);enter 10 scores:1GG 56 78 98 67.5 99 54 88.5 76 58average score is 了了.50Press 曰ny key to continue.例ttincludeOint main ()float average(float array10, int n):f loat scorel 5 = , 97, 60, 55;float score210 = ,

10、99, 77, 54, 60,; printf (The average of class A is %n，z, average (scorel, 5); printf (The average of class B is %n，z, average (score2, 10): return 0;float average(float array10,int n)int i;float aver, sum二array0;for (i二l;in;i+)sumsum+arrayi;aversum/n;return(aver);The average of class A is 80.40The a

11、uerage of class B is 了8.20 Press any key to continue例ttincludeOint main()void sort (int array, int n);int a10,i;printf(enter array:n);for(i=0;i10;i+)scanf (%d，&ai);sort(a, 10);printf (The sorted array: n，/);for(i=0;i10;i+)printf (，z%d ,ai);printf(n);return 0;void sort(int array ,int n)int i, j, k, t

12、;for(i=0;in-l;i+)k=i;for(j=i+l;jn;j+)if (arrayjarraykJ)k=j;t=arrayk;arrayk=arrayi;array i=t;wnter array:45 2 9 0 7 54 12 5 GG 33 The sorted array：-3 0 2 5 9 12 33 45 54 66 Press any key to continue.ftincludeOint main ()int max_value(int array 4);int a3 4 = 1,3, 5, 7, 2, 4, 6, 8, 15,17,34, 12;printf

13、(Max value is %dn，z, max_value (a):return 0;int max_value(int array4)int i, j, max;max二array0_ 0;for(i=0;i3;i+)for(j=0;jmax) max二arrayij;return(max);Max ualuG is 34Press any key to continue例ttincludeO float Max=0, MinO;int mainOfloat average (float array, int n):float ave,score10;int i;printf(Please

14、 enter 10 score:);for(i=0;i10;i+)scanf, &score i);ave=average(score, 10);printf (max 二nminnaverage二n, Max, Min, ave); return 0;float average(float array,int n)int i;float aver, sum二array0;Max二Min二array0;for(i=l;iMax) Max=arrayLi;else if(arrayiba：b;return(c);max=8Press any key to continue.ttincludeO

15、int main()int f(int);int a二2, i ;for (i二0;i3;i+)printf(%dn, f(a);return 0:int f(int a)auto int b=0;static c二3;b二b+l;c二c+1;return(a+b+c);789Preos any key to continue1ttincludeOint main ()int fac(int n);int i;for (i=l;iBA:B;if(Cm)m=C;return(m);Please enter three interger numbers37 67 12max is 67Press

16、any key to continu例ttincludeOint A;int main()int power(int);6UH(D4X(D 亠oUJEnpQJ:二P dv、戈泰芯鑒*爰、)Tupd-(lu) xomodHP(。q、5p 竄p藍(lán)爰、)3pu=d-q*vu。二 Incaq.u(D、) J-PUIJCI-lu p 2uq-PUIeprqou 耳ODCCOO 04 Rom Rumr-6L*exKCL 62僉TTeL 30d S4-HpueoLQqEnuQXZ4 GI4ua-(A) UJmpoJ:U*A(+U2二 ).103二 HA.Hpu-rH(u pul) Ho占 OQ 4u-rdi

17、nt mainOextern void enter_string(char str);extern void delete_string(char strL,char ch);extern void print_string(char str):char c,strL80;enter_string(str);scanf&c);delete_string (str,c);print_string(str);return 0;void enter_string(char str 80)gets (str);void delete_string(char str ,char ch)int i, j;

18、for(i=j=0;striU 0, ;i+)if (str i !=ch)strj+=stri;strj二0;void print_string(char str)printf (%sn, str);This io a C programThisisaCprogramPress any key to continue習(xí)題1.ftincludeOint divisor (x,y)int r;if(x0) disci (a,b,c);else if(fabs(d)=le6) disc2 (a,b,c);else disc3(a,b,c);return 0;請(qǐng) TAa,b,c：1 .0,3.0,2

19、.0 方程有兩不等實(shí)杈：x1 -1 .00,x2-2.00 Press any key to continue了稈有兩相等氓棍：X1=XZ1 .00Press any key to oontinue方程有兩不等實(shí)根:Xl=-0.17+ 9.99i,x2=-0.17- 0.991 Press any key to continue3.tiincludeOttincludeOvoid f (int a)int i, n二(int)sqrt (a),t;for(i=2, t=l;i=n;i+)if(a%i=O) t 二0;printf (，z這是一個(gè)合數(shù).n) ;break;if(t) printf

20、CS是一個(gè)素?cái)?shù).n)；int main ()int a;printf (請(qǐng)輸入一個(gè)正整數(shù)a: )；scanf&a);f (a);return 0;請(qǐng)輸入一個(gè)正整數(shù)a： 23這是個(gè)去數(shù).Press any key to continuq請(qǐng)輸入一個(gè)正整數(shù)a：102 這是一個(gè)合藪Pss any key to continuettincludeO void f(int ai33J)4.int i, j, t;for(i=0;i=2;i+)for(j=0;ji;j+)aij二 aji;aji二 t;void main ()int i, j,a3 3 = 1, 2, 3, 4, 5, 6, 7, 8, 9

21、;for(i=0;i=2;i+)for(j=0;j=2;j+)printf(%5d, aij);printf (n);printf(n);f (a);for(i=0;i=2;i+)for(j=0;j=2;j+)printf (%5d, ai j); printf(n);2 5 8 u- 5 6continue,23Press5.ttincludeOttincludeOvoid f(char a)int i, t;char b:t=strlen(a);for(i=0;i=t/2;i+)b=ai;aEi=at-i-l: void main ()char ch80;gets(ch); f(ch)；

22、puts(ch);I miss you so much,and you? ?uoy dna,hcum os uoy osim I Press any key to continuo.6.tiincludeOvoid f (char a, char b )int i, j;for(i=0;ai!= 0* ; i*);for(j=0;bj!= 0J ;i+, j+) ai二bj;void main ()char chi 80=，How do you do!, ch2二Fine, thank you, and you;f (chi, ch2);puts(chi);How do you do?Fine

23、,thank you T and you? Press any key to continue-7.ttincludeOvoid f (char a80, char b40)int i, j;for(i=0, j=0;ai!= 0 ;i卄)辻(ai二二A|ai=E | ai=I丨 | ai=0 丨 | ai=U丨 | ai=，a |ai=e|ai=iT ai=，o, | ai=u)bj=ai;j卄；bj二0;int main ()char chi80二How are youFine,thank you,and you,ch240;f (chi, ch2);puts(ch2);return 0;

24、oaeouieaouaouPress any key to continue8.ttincludeOvoid f (int n, int ch)ch0=n/1000;ch1 = (n-ch01*1000)/100;ch2=(n-ch0*1000-chl*100)/10;ch3=n%10;void main ()int n, i, ch4;printf C輸入一個(gè)四位整數(shù)：n);scanf&n);f(n, ch);for(i=0;i二A&ci二Z) upp+;else if (c i =，a &c i二O&ci二9) num+;else if(ci=， ) space+;else other+;

25、void main ()char ch80;printf C輸入一句英文，限80字符內(nèi):n);gets (ch);f (ch);printfC大寫字母%d個(gè)，小寫字母%(1個(gè)，數(shù)字%d個(gè)，空格%d個(gè)，其他d 個(gè)upp, low, num, space, other);輸入一句英文，限80口符內(nèi)：I miss you so much,and you?大寫宇母1個(gè)，小寫宇母19個(gè)，數(shù)宇0個(gè)，空格5個(gè)，其他2個(gè)Press anu keu to continue10.ftincludeOvoid f (char a100,char b4030)int i, m, n, k, g；for(i二m二n二k

26、=g=0;ai!二0 ；i+)if (ai= a &ai=A&aiV Z)請(qǐng)輸入一句英文：Nihilumbra is my fauorite mobile game 最長的單詞為？NihilumbraP廠esskey to continuettincludeO void f(char a10)int i, j;char ch;for(i=0;i=8;i+)for(j=i+l;jaj)ch二ai;ai=aj;aj二 ch;void main ()char a10;printfC請(qǐng)輸入10個(gè)字符:n);gets(a);f (a);puts(a);請(qǐng)輸入10個(gè)宇符：忡$沁冷。Press any ke

27、y to continue,12.ttincludeO float f (float a, float b,float c, float d, float x)float z;z二x-(a*x*x*x+b*x*x+c*x+d)/(3*a*x*x+2*b*x+c);return (z);void main ()float a, b, c, d, x;printf (請(qǐng)輸入 a, b, c, d：n);scanf (%f, %f, %f, %f, &a, &b, &c, &d);printf (方程為f*x*x*x+%f*x*x+%f*x+%f二0n，a, b, c, d);while(a*x*x

28、*x+b*x*x+c*x+dle-6)x二f (a, b, c, d, x);printf (”方程在1附近的根為:%fn，z, x);請(qǐng)輸 Aa.b.c.d：1,2,3,q方程為1 000000xxxxxx+2 00OOOOxxxx+-3 0OOOOOxx+2t. 000000 = 0 方程在1附近的根為-1-728395Press any key to continue.ftincludeO float p (int n, float x)13.if (n0)y=l;else if(n=l)y=x;else y= (2*n-l) *x*p(n-1, x) -(n-l)*p(n-2, x)

29、/n; return (y);void main ()f loat x, y;int n;printf (請(qǐng)輸入正整數(shù)n和實(shí)數(shù)x: n);scanf (“%u, %f ”, &n, &x);y二p (n, x);printf (”%fn, y);請(qǐng)輸入正整數(shù)n和實(shí)數(shù)x：154.000000Press eny key to continue14.tiincludeOvoid fO(double a.10 5)int i,j;double sum, aver;for(i=0;i=9;i+)sum=0, aver=0;for(j=0;j=4;j+)sum+=aij;%分，i+1, aver);ave

30、r=sum/;printf (第%d夕學(xué)生的平均分為:void fl (double a105)int i, j;double sum, aver;for(j=0;j=4;j+)sum=0, aver=0;for(i=0;i=9;i+)sum+=aij;aver=sum/;printf （第%d門學(xué)科的平均分為:%分，j+1, aver）;void f2(double a105)int i, j, s, t;double max:for(j=0;j=4;j+)max=0;for(i=0;i=9;i+)if(maxaijj)max=aijj;s=i;t=j；printf C第d門學(xué)科的最高分為第

31、%d學(xué)生:%分11, t+1, s+1, max);void f3(double a105)int i, j;double s, t, y;for(i=0;iU9;i+)s二t二y=0;for(j=0;j i+1, y);void main ()doublea10 5 = 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 2& 29, 30, 31, 32, 33, 34, 35, 36, 37 ,3& 39, 40, 41, 42, 43, 44

32、, 45, 46, 47, 4& 49, 50;f0 (a);fl(a);f2(a);f3(a);第1名學(xué)生的平均分為 第2名學(xué)生的平均分為 均分為 均分為 均分為 均分為 均分為 為分為 均分為3分80分 13.0分 18 &分 23&分. 28 &分 330分 380分 43 0448.0； 23.5分 24 5分 25.5分 26.5分 275分第3名學(xué)生的 笫耳名學(xué)生的平 笫5名學(xué)生的平 笫6名學(xué)生的平 笫7名學(xué)生的平 笫8名學(xué)生的平 第9名學(xué)生的平 第名學(xué)生的平均分為： 第1門學(xué)科的平均分為： 第2門第3門 第4門 第5門 第1門 第2門 第3門 第4門 第5門學(xué)科的最高分為第10學(xué)

33、生 第1名學(xué)生的平均分方差為： 第2名學(xué)生的平均分方差為： 第3名學(xué)生的平均分方差為？ 第4名學(xué)生的平均分方差為？ 第5名學(xué)生的平均分方差為？ 第6名學(xué)生的平均分方差為？ 第了名學(xué)生的平均分方差為？ 第8名學(xué)生的平均分方差為！ 第9名學(xué)生的平均分方差為： 第W名學(xué)生的平均分方差為： Press anu keu to continue笫6名學(xué)均分為 均分為 均分為15.學(xué)科肉 學(xué)科的 學(xué)科的 學(xué)呆的平均分為 學(xué)芒的最鬲分為第2學(xué)生 學(xué)儀的最鬲分為第W學(xué)生 學(xué)科的最高分為第W學(xué)生 學(xué)科的最高分為第W學(xué)生ftincludeOtiincludeO46.0分47.0448.0449.050.042.0

34、2.0 2 0 2.0 2.0 2.0 2.02.02.02.0void f(int a10, char b10 20)int 1, j, t;char ch20;for(i=0;iU8;i+)for(j=i+l;j=9;j 卄)t=ai;ai=aj;aj二t;strcpy (ch, bi);strcpy(bi, bj);strcpy(bLj,ch);void g(int k, int a10, char b1020)int i, m=l;if(ka4)for(i=9;i=5;i-)if(k=ai)printf(%d %sn, ai, bi); m二 0;elsefor(i=0;i=4;i+)

35、if (k=ai)printf (%d %sn, ai, bi) ;m二 0;if (m) printfC輸入職工號(hào)錯(cuò)誤n);void main ()inti, k,a10 = 2411, 2123, 2135, 2147, 2169, 2172, 2184, 2196, 2108, 2110;char b10 20 = f馬云，李娜，張靚穎，吳彥祖，劉徳華，孫 燕姿，田震，那英，梁朝偉，劉悴；for(i=0;i=9;i+)printf (”d %sn, ai, bi);printf(n);f (a, b);for(i=0;i=9;i+)printf (z，%d %sn, ai, bi);printf(