程序设计技术习题参考答案

1、WORD格式程序设计技术第三版习题参考答案习题 1一、单项选择题DADDDB CCD注：第7 小题无正确选项，正确答案为-12 二、填空题 主 main x=x*(x+b) 普通、格式、分隔和转义 指定输出数据格式 void main() how are you! 三、阅读程序题1. 9,11,9,102. 2,-1,-13.aa bbccabc4. 2,25. 575 767.5864000,-789.12402367.5864000, -7.89e+00267,86, -789.12,67.5864000, -789.124023, 67.5864000, -789.1240236.758

2、640e+001, -7.89e+0021234567,4553207,12d68765535,177777,ffff,655356. a + c = 102 a + c = ff + m = 17.950000a + m = 17.650000c + f = 102.300000double = 1746.150019四、程序设计题/xt010401.cpp#include #define PI 3.1415926void main()double r,h;printf( 请输入半径 r 和高 h： ); scanf(%lf,%lf,&r,&h);printf( 圆半径 : %lfn,2*P

3、I*r); printf( 圆面积： %lfn,PI*r*r);专业资料整理WORD格式printf(圆球外表积：%lfn,4*PI*r*r);printf(圆球体积： %lfn,4.0/3*PI*r*r);printf(圆柱体积： %lfn,PI*r*r*h);/xt010402.cpp#include void main()int c;printf(Input a character:);c=getchar();printf(%ct%dn,c,c);/xt010403.cpp#include void main()int x,y,h=30,f=90; x=(4*h-f)/2;y=(f-2*

4、h)/2;printf(鸡： %d, 兔： %dn,x,y);/xt010404.cpp#include #include void main()double a,b,c,s,area;专业资料整理WORD格式printf(请输入三角形的三条边长注意三条边长应能够构成三角形scanf(%lf,%lf,%lf,&a,&b,&c);s=(a+b+c)/2;area=sqrt(s*(s-a)*(s-b)*(s-c);：);专业资料整理WORD格式printf(三角形的面积是: %lfn,area);专业资料整理WORD格式/xt010405.cpp#include void main()double

5、 f,c;printf( 请输入华氏温度： ); scanf(%lf,&f);c=5.0/9.0*(f-32);printf(与华氏温度 %.2lf对应的摄氏温度是：%.2lfn,f,c);/xt010406.cpp#include void main()char c1,c2,c3,c4,c5;专业资料整理WORD格式printf(请输入需加密的字符串5 个字符： );c1=getchar();c2=getchar();c3=getchar();c4=getchar();c5=getchar();printf(加密后的字符串是：);putchar(c1+5);putchar(c2+5);put

6、char(c3+5);putchar(c4+5);putchar(c5+5);printf(n);习题 2一、单项选择题CBADC CCAAC二、填空题 a+b=0&a*b!=0 逻辑与 逻辑或 continue (c= getchar ()!=n %c三、阅读程序题答案：答案：1( x0 )sign x0( x0)1( x0 )该程序所完成功能的函数关系为：答案：答案：专业资料整理WORD格式答案：专业资料整理WORD格式答案：四、程序设计题/* xt020401.cpp */#include void main()int num;printf(* Input num: *n);scanf(

7、%d,&num);if(num%3=0&num%5=0&num%7=0)printf(* YES ! *n);elseprintf(* NO ! *n);/* xt020402.cpp */#include void main()int h=0;float x,y,x0=2,y0=2,d1,d2,d3,d4;printf(* input: x,y *n);scanf(%f,%f,&x,&y);专业资料整理WORD格式d1=(x-x0)*(x-x0)+(y-y0)*(y-y0); /*点 x,y到各中心点的距离*/专业资料整理WORD格式d2=(x-x0)*(x-x0)+(y+y0)*(y+y0

8、);d3=(x+x0)*(x+x0)+(y-y0)*(y-y0);d4=(x+x0)*(x+x0)+(y+y0)*(y+y0);if(d1=1|d2=1|d3=1|d4=1)h=15;printf(x=%f, y=%fn,x,y);printf(h=%dn,h);/* xt020403.cpp */#include void main()int i,j,k,n;for(n=100;n=999;n+)i=n/100;专业资料整理WORD格式j=n/10-i*10;k=n%10;if(n=i*i*i+j*j*j+k*k*k)printf(%dn,n);/* xt020404.cpp */#incl

9、ude #include #define EPS 1.0e-6void main()float e=1,t;long int j=1,n=1;do j=j*n; t=1.0/j;e=e+t;n+;while ( fabs(t) = EPS );printf(e=%fn,e);/* xt020405.cpp */#include void main()int num=1;doif(num+3)%5=0&(num-3)%6=0) break;num+=1;while(1);printf(num=%dn,num);/* xt020406.cpp */#include void main() int

10、num; for(num=1;num=99;num+)if(num*num%10=num|num*num%100=num)printf(%4d,%5d,num,num*num);printf(n);/* xt020407.cpp */专业资料整理WORD格式#include void main() int n,k=1; float s=0; for(n=1;n=10000;n+) s=s+1.0/(2.0*n-1)*k;k=-k;printf(PI=%fn,4*s);/* xt020408.cpp */#include void main() int n10,n5,n2,n1; for(n10

11、=1;n10=9;n10+)for(n5=1;n5=17;n5+)for(n2=1;n2=1&n10*10+n5*5+n2*2+n1=100)printf(n10=%d,n5=%d,n2=%d,n1=%dn,n10,n5,n2,n1);/* xt020409.cpp */#include void main()float sn=100,hn=sn/2; int n=2;while(n=10) sn+=2*hn; hn=hn/2;n+;printf(%f,%fn,sn,hn);/* xt020410.cpp */#include void main() int day,x1,x2=1; for(

12、day=9;day0;day-) x1=(x2+1)*2;x2=x1;printf(Total=%dn,x1);专业资料整理WORD格式习题 3单项选择题BBCAC DDABB填空题 9 0 10 x 一致 n/2 sum+a sum/n三、阅读程序题1. 2 4 62. s=303. 59458424. lanuge5. 8 1 63574926. max=10,row=2,colum=1四、程序设计题/xt030401.cpp#include#include#include#defineN 10void main()inti, arr10,a;srand(unsigned )time(NU

13、LL);printf( 请输入一个位数，试试您是否能中奖： );scanf(%d,&a);for (i=0;iN;i+) arri = rand()%100;if (a = arri)printf( 猜中一个数 : %d 下标是 %dn ,a,i+1);printf(n );for ( i=0; iN; i+)printf(%dt ,arri);专业资料整理WORD格式/xt030402.cpp#include #include #include void main(void) int a5=23,45,60,67,88,x,i,j,yes=0; for(i=0;i5;i+)printf(%d

14、,ai);printf(nwhich number do you want to deleten); scanf(%d,&x);for(i=0;i5;i+)if(ai=x) yes=1;for(j=i;j5;j+) aj=aj+1;if(yes=1) for(i=0;i4;i+) printf(%d,ai);else printf(The number you want doesnt exist);/xt030403.cpp#include #include #include #define SIZE 1000void main()int x,aSIZE,size,sum=0;srand(un

15、signed)time(NULL);while(size=rand()%1000)200);printf(nRandomiz list size(1000):%d,size);printf(nAuto make a %d size of list:n,size);for(x=0;xsize;x+) ax=rand()%1000 ;printf(%dt,ax);sum+=arrx;printf(nThe sum of array elements is %d, sum);/xt030404.cpp#include #include #include #define SIZE 100void ma

16、in()专业资料整理WORD格式int x,aSIZE,max=0,min=1000,b1,b2;srand(unsigned)time(NULL);printf(nAuto make a %d size of list:n,size);for(x=0;xSIZE;x+) ax=rand()%1000 ; printf(%dt,ax);for(x=0;xmax)if(axmin)max=ax,b1=x;min=ax,b2=x;专业资料整理WORD格式专业资料整理WORD格式printf(nThe array elements max= %d in %d n min=%d in %dn,max,

17、b1,min,b2);/xt030405.cpp#include #define SIZE 100#define KIND 5void main()int x,y,len,totalKIND+1;int a=1,1,1,1,2,2,2,3,5,5,5,5,1,1,3,3,3,3,3,2,2,2,5,5,5;len=sizeof(a)/sizeof(a0);for(x=0;xKIND+1;x+) totalx=0 ;for(y=1;yKIND+1;y+)for(x=0;xlen;x+)if (ax=y) totaly+;printf(nThe list kinded:n);for(x=0;xle

18、n;x+) printf( %d ,ax);printf(nThe total result: );for(x=1;xKIND+1;x+) printf( %d-%d, ,x,totalx);/xt030406.cpp#define N 26#include int main(void) static int aN+1,bN+1; int i,j,s,m,p;专业资料整理WORD格式scanf(%d%d,&s,&m);for (i=1;i=N;i+) ai=i;i=s-1;j=0;p=0;while (pN) i-=N;if (ai=0) i+;goto bh; j+;if (j%m=0) p

19、+;bp=ai;ai=0;j=0; for (i=1;i=N;i+) printf(%3d,bi);printf(n);/xt030407.cpp#include void main()int i,j,s=0,ave,v3;static int a53= 80,75,92,61,65,71,59,63,70,85,87,90,76,77,85 ; for(i=0;i3;i+) for(j=0;j5;j+)s=s+aji;vi=s/5;s=0;ave=(v0+v1+v2)/3;printf(math:%dnc languag:%dndbase:%dn,v0,v1,v2);printf(total

20、 ave:%dn,avel);/xt030408.cpp#include void main()int i,j,a1010, b=1,2,3,4,5,6,7,8,9,10;for(i=0;i10;i+) a0i=bi;for(i=1;i10;i+)for(j=0;jj) aij=aji;else aij=ai-1j-1;for(i=0;i10;i+) for(j=0;j10;j+)printf(%dt,aij);printf(n);专业资料整理WORD格式/xt030409.cpp#include #include #include #define SIZE 5000#define N 7vo

21、id main()int x,y,aN=0,0,0,0,0,0,0,s;srand(unsigned)time(NULL);x=0;while(x0&s7) as+;x+;printf(nRandomiz 1-6 list n);for(x=1;xN;x+)s=ax*0.07;for(y=0;ys;y+)printf(%d,x);printf(t%dt%2.1f%n,ax,(float)ax*100/SIZE);/xt030410.cpp#include #define N 20int main()int x,s,tag;char aN;printf(Please input numbers

22、and its length less then %d:,N-1); s=1;while(sN) scanf(%c,&as);if(as=10)break;s+;printf(nThe numbers is :n);专业资料整理WORD格式for(x=1;xs;x+)printf(%c,ax);tag=0;for(x=1;xs/2;x+)if(ax!=as-x) tag=1;break;if(tag=0)printf(nThe number is palindrome!);else printf(nThe number isnt palindrome!);习题 4一、单项选择题ABACABCB

23、DD二、填空题 主 main 函数 main 函数 个数 类型 顺序 函数类型 float(float x,int n) f(x,n) x*f(x,n-1)三、阅读程序题1 x=5,y=252. y=170.03. s1=3.14,s2=5.144. 50025. 5,36. 3.00,1.00,0.25四、程序设计题/xt040401.cpp#include void main( ) void dis(int n);专业资料整理WORD格式int n;scanf(%d,&n);dis(n);void dis(int n) int k0,k,sum,i; k0=1;dok=k0; sum=0;

24、 for(i=1;i=n;i+)sum=sum+k; k=k+2;if(sum=n*n*n)break;elsek0=k0+2;while(1);for(i=1;i=n;i+)printf(%5d,k0); k0=k0+2;/xt040402.cpp#include void main( )float h(int n,float x); int n;float x;scanf(%d,%f,&n,&x);printf(h(%d,%f)=%f,n,x,h(n,x);float h(int n,float x)if(n=0) return 1;else if(n=1)return(2*x);else

25、return(2*x*h(n-1,x)-2*(n-1)*h(n-2,x);/xt040403.cpp#include void main()专业资料整理WORD格式int f(int n); int i; for(i=2;i=1000;i+)if(f(i)printf(%6d,i);int f(int n)if(n=n*n%10|n=n*n%100|n=n*n%1000) return 1;elsereturn 0;/xt040404.cpp#include void main( )long fun(int a,int n); int k,n;scanf(%d,%d,&k,&n);printf

26、(%ldn,fun(k,n);long fun(int a, int n)int j;long s=0,t=0; for(j=1;j=n;j+) t=t*10+a;s=s+t;return s;/xt040405.cpp#include #include void main()int num,middle1,middle2; int detect(int d);printf(Please input a positive even number(=6):); scanf(%d,&num);for(middle1=2;middle1=num/2;middle1+=1)if(detect(midd

27、le1)middle2=num-middle1;if(detect(middle2)printf(%d=%d+%dn,num,middle1,middle2);break;专业资料整理WORD格式int detect(int d)int i; for(i=2;i=sqrt(d*1.0);i+)if(d%i=0)return(0);return 1;/xt040406.cpp#include void main()float f(float x,int n); float x,an;int n; scanf(%f,%d,&x,&n); an=f(x,n);printf(an=%fn,an);fl

28、oat f(float x,int n)if(n=0) return 1;elsereturn x/n*f(x,n-1);/xt040407.cpp#include void main()float f(float x,int n); float x,fn;int n; scanf(%f,%d,&x,&n);fn=f(x,n);printf(an=%fn,fn);float f(float x,int n)if(n=0)return 1;else if(n0)return x*f(x,n-1);elsereturn f(x,n+1)/x;/xt040408.cpp专业资料整理WORD格式#in

29、clude void main( )void f(int n); int n; scanf(%d,&n); while(n=0)scanf(%d,&n);f(n);void f(int n)if(n/10=0) putchar(n%10+0);elseputchar(n%10+0); f(n/10);/xt040409.cpp#include void main( )void f(int n); int n;scanf(%d,&n);while(n=0)scanf(%d,&n);f(n);void f(int n)if(n/10) f(n/10);putchar(n%10+0);/xt0404

30、10.cpp#include void main()int f(int n);int n;for(n=2;n=1000;n+)if(f(n)printf(%d is a完数 n,n);int f(int n)int i,s=0; for(i=1;in;i+)专业资料整理WORD格式if(n%i=0)s=s+i;if(s=n)return 1;elsereturn 0;习题 5一、单项选择题AACCA DDACB二、填空题 “ char *func1() 定义一个返回字符指针值的函数， “ char(*func2)() 定义一个指向函数的指针 一个返回值为单精度类型指针的函数名； (*p)(a,

31、b,c) findmin (*f)(x,y,z);三、阅读程序题112025,4,3344155112649111131315/xt050401.cpp#include stdio.hvoid main()void f(int,int,int); int a,b,c;void (*p)(int,int,int); scanf(%d%d%d,&a,&b,&c); p=f;(*p)(a,b,c);void f(int x,int y,int z) int t; if(xy)t=x,x=y,y=t;if(yz)专业资料整理WORD格式t=z,z=y,y=t;if(xy)t=x,x=y,y=t;pri

32、ntf(%5d%5d%5dn,x,y,z);/xt050402.cpp#include int max(int a,int b)if(ab)return a;elsereturn b;void main()int max(int a,int b); int(*pmax)(int,int); int x,y,z;pmax=max;printf(input two numbers:n);scanf(%d%d,&x,&y);z=(*pmax)(x,y);printf(maxmum=%d,z);/xt050403.cpp#include stdio.hvoid gcd(int x,int y)int

33、temp;while(y!=0)temp=x%y; x=y;y=temp;printf(The greatest common divisor is:%dn,x);void lcm(int x,int y)int temp,m,n; m=x;n=y;while(x!=0)temp=y%x;y=x;x=temp;printf(The lowest common multiple is:%dn,m*n/y);专业资料整理WORD格式void main()int a,b;void (*p)(int,int); printf(Please input a and b:); scanf(%d%d,&a,

34、&b); if(ab)p=gcd;elsep=lcm;(*p)(a,b);/xt050404.cpp#include stdio.hvoid main()int x,y;int sum(int,int),diff(int,int),product(int,int);void mma(int x,int y,int s(int,int);printf(Please input x,y:n);scanf(%d%d,&x,&y);printf(The sum of x and y is:);mma(x,y,sum);printf(The difference of xa nd y is:);mma(

35、x,y,diff);printf(The product of x and y is:);mma(x,y,product);int sum(int x,int y)return x+y;int diff(int x,int y) return x-y;int product(int x,int y)return x*y;void mma(int a,int b,int s(int,int)int w;w=s(a,b);printf(%dn,w);/xt050405.cpp专业资料整理WORD格式#include double func1(int x),func2(int y);void mai

36、n()double (*fptr)(int); /*int n;printf(input a numberscanf(%d,&n);if(n1)if(n%2=0)fptr=func1;/*n定义指向函数的指针变量fptr*/：);为偶数，指针变量ptr指向函数func1()*/专业资料整理WORD格式else专业资料整理WORD格式fptr=func2; /*n为奇数，指针变量ptr指向函数func2()*/专业资料整理WORD格式printf(value=%9.4fn,(*fptr)(n);elseprintf(error!n);double func1(int x)int k; doubl

37、e value; value=1.0; for(k=2;k=x;k=k+2)value=value+1/(double)k;return value;double func2(int y)int k;double value; value=1.0; for(k=3;k=y;k=k+2)value=value+1/(double)k;return value;/xt050406.cpp#include stdio.h#include math.hvoid main()int n,yinzi(int),(*f)(int); f=yinzi;printf(input a number n:);sca

38、nf(%d,&n);if(*f)(n)=2)printf(n%d is a prime number.,n);else专业资料整理WORD格式printf(n%d is not a prime number.,n);int yinzi(int x)int i,k=0,q=(int)sqrt(x); for(i=1;i=q;i+)if(x%i=0) k+=2;printf(%5d%5d,i,x/i);return k;/xt050407.cpp#include #include double f1(double x)return x*x*log(x);double f2(double x)ret

39、urn x*sin(x);double f3(double x)return x/exp(x);double collect(double (*p)(double x),double a,double b,double n)int i;double h,area; h=(b-a)/n;area=(*p)(a)+(*p)(b)/2.0;for(i=1;i=eps);if(m=0) return (0);return (1);double f1(double x)return(1.0+atan(x);double f2(double x)return(0.5*cos(x);double f3(double x)return(6.0+3*x-x*x)/4);/* x=(6+3*x-x*x)/4*/void main()double x,(*p)(double); x=1.0;p=f1;if(root(&x,50,0.00001,p)pr