《C语言程序设计 苏小红版 第五六单元 答案.doc》由会员分享，可在线阅读，更多相关《C语言程序设计 苏小红版 第五六单元 答案.doc（22页珍藏版）》请在三一文库上搜索。
1、第五章5.1#includevoid main()double x;printf(请输入一个实数:n);scanf(%lf,&x);if(x0)printf(%fn,x);elseprintf(%fn,-x);5.2#include main()int a,b;printf(请输入一个整数:);scanf(%d,&a);b=a%2;if(b=0)printf(%d为偶数n,a);elseprintf(%d为奇数n,a);5.3#include#includemain()float a,b,c,s,area;printf(请输入三边长:);scanf(%f,%f,%f,&a,&b,&c);s=(
2、a+b+c)/2;area=(float)sqrt(s*(s-a)*(s-b)*(s-c);if(a+bc)&(a+cb)&(b+ca)printf(这个三角形的面积为%fn,area);elseprintf(这三条边不能组成三角形n); 5.4#include#includevoid main() double a,b,c,d,e,x1,x2; printf(请输入a,b,c:); scanf(%lf,%lf,%lf,&a,&b,&c); if(a=0) printf(该方程不是一元二次方程.n); else if(b*b-4*a*c0) d=sqrt(b*b-4*a*c); x1=(-b+
3、d)/(2*a); x2=(-b-d)/(2*a); printf(x1=%f,x2=%fn,x1,x2); else if(b*b-4*a*c=0) x1=(-b)/(2*a); printf(x1=x2=%fn,x1); else if(b*b-4*a*c0) printf(该方程没有实数解.n); 5.5#includemain()int year,flag;printf(输入年份:);scanf(%d,&year);if(year%4=0)&(year%100!=0)|(year%400=0)flag=1;elseflag=0;if(flag=1)printf(%d是闰年n,year)
4、;elseprintf(%d不是闰年n,year);5.6#includevoid main()int year,flag;printf(输入年份:);scanf(%d,&year);flag=(year%4=0)&(year%100!=0)|(year%400=0)?1:2; if(flag=1)printf(%d年是闰年n,year);elseprintf(%d年不是闰年n,year);5.7#includemain()char ch;printf(请输入一个字母:);ch=getchar();if(ch=65)&(ch=97)&(ch=122)ch=ch-32;printf(%c,%dn
5、,ch,ch);elseprintf(%cn,ch);5.8#includemain()char ch;printf(请输入一个字符:);ch=getchar();if(ch=48)&(ch=65)&(ch=97)&(ch=122)printf(这是一个小写字母.n); else if(ch=32)printf(这是一个空格字符.n);elseprintf(这是一个其它字符.n);5.9#includemain()int score,mark;printf(Please enter score:);scanf(%d,&score); if(score100)printf(Input error
6、!n);else if(score=90&score=80&score=70&score=60&score70)printf(%d-Dn,score);elseprintf(%d-En,score);5.10#include #include main()int flag, year,month,day,day1=31,day2=30,day3=29,day4=28;printf(请以2012,03这种形式输入某年某月 :);scanf(%d,%d,&year,&month);if (month12|month1)printf(你输入的年份不在合法范围内n);exit(0);elseflag=
7、(year%4=0 & year%100 !=0|year% 400 =0)?1:0; switch (flag)case 1:printf(闰年);break;case 0:printf(平年);break;if (month=2&flag=1)day=day3;else if (month=2&flag=0)day=day4;switch (month)case 1:case 3:case 5:case 7:case 8:case 10:case 12:printf(%d年,%d月拥有的天数是31. n,year,month);break;case 4:case 6:case 9:case
8、 11:printf(%d年,%d月拥有的天数是30. n,year,month);break;default:printf(%d年,%d月拥有的天数是%d: n,year,month,day);本章实验题1#includemain() double faheight,maheight;char sex,sports,diet,F,M,Y,N;printf(请输入父母的身高:n);scanf(%lf,%lf,&faheight,&maheight);printf(请输入孩子是男孩还是女孩(F/M):n);scanf( %c,&sex);printf(请输入孩子是否喜欢锻炼身体(Y/N):n);
9、scanf( %c,&sports);printf(请输入孩子是否有良好的饮食习惯(Y/N):n);scanf( %c,&diet);if(sex=77&sports=89&diet=89)printf(该孩子成人时身高约为:%.2f.n,(faheight+maheight)*0.54*1.02*1.015);else if(sex=77&sports=89&diet=78)printf(该孩子成人时身高约为:%.2f.n,(faheight+maheight)*0.54*1.02);else if(sex=77&sports=78&diet=89)printf(该孩子成人时身高约为:%.2
10、f.n,(faheight+maheight)*0.54*1.015);else if(sex=77&sports=78&diet=78)printf(该孩子成人时身高约为:%.2f.n,(faheight+maheight)*0.54);else if(sex=70&sports=89&diet=89)printf(该孩子成人时身高约为:%.2f.n,(faheight*0.923+maheight)/2*1.02*1.015);else if(sex=70&sports=89&diet=78) printf(该孩子成人时身高约为:%.2f.n,(faheight*0.923+maheigh
11、t)/2*1.02);else if(sex=70&sports=78&diet=89)printf(该孩子成人时身高约为:%.2f.n,(faheight*0.923+maheight)/2*1.015);else if(sex=70&sports=78&diet=78)printf(该孩子成人时身高约为:%.2f.n,(faheight*0.923+maheight)/2);本章实验题2#includemain()double t,w,h;printf(请输入体重身高:n);scanf(%lf,%lf,&w,&h);t=w/(h*h);if(t=18&t=25&t=27)printf(肥胖
12、.n);第六章6.1(1)#include main()int i,j,k;char space= ;for (i=1;i=4;i+)for (j=1;j=i;j+)printf(%c,space);for (k=1;k=6;k+)printf(*);printf(n);6.1(2)#include main()int k=4,n;for (n=0;nk;n+)if (n%2=0) continue;k-;printf(k=%dn,n=%dn,k,n);6.1(3)#include main()int k=4,n;for (n = 0;n k;n+)if (n%2 =0) break;k-;p
13、rintf(k=%d,n=%dn,k,n);6.2(1)#include main()int i,sum = 0;for (i=1;i=101;i=i+2)sum=sum+i;printf(sum = %dn,sum);6.2(2)#include main()long i;long term,sum = 0;for (i=1;i=99;i=i+2)term=i*(i+1)*(i+2);sum=sum+term;printf(sum =%ldn,sum);6.2(3)#include main()long term=0,sum=0;int a,i,n;printf(Input a,n:);sc
14、anf(%d,%d,&a,&n);for (i = 1;i=n;i+)term = term * 10 + a;sum=sum+term;printf(sum = %ldn,sum);6.2(4)#include#includemain()int n = 1;float term = 1.0,sign = 1,sum = 0;while (fabs(term) = 1e-4)term = sign / n;sum = sum + term;sign = -sign;n+;printf(sum = %fn);6.2(5)#include#includemain()int n = 1,count
15、= 1;float x;double sum,term;printf(Input x:);scanf(%f,&x);sum = x;term = x;doterm = -term*x*x/(n+1)*(n+2);sum = sum + term;n = n + 2;count+;while (fabs(term)=1e-5);printf(sin(x) = %f,coumt = %d n,sum,count);6.3#includemain()int x=1,find=0;while (!find)if (x%2=1 & x%3=2 & x%5=4 & x%6=5 & x%7=0)find=1
16、;x+; printf(x=%dn,x-1);6.4#includemain()int i,n;long p,j;printf(Please enter n:);scanf(%d,&n);for (i=1;i=n;i+)p=i*i;j=i*i*i;printf(%d * %d = %ldn,i,i,p);printf(%d * %d * %d= %ldn,i,i,i,j);6.5#includemain()double C,F,i;for (F = -40;F = 110;F = F + 10)C = (F-32)*5/9;printf(F=%f C=%fn,F,C);6.6#includem
17、ain()double p = 1 + 0.01875*12,x4,x3,x2,benjin;x4 = 1000/p;x3 = (x4 + 1000)/p;x2 = (x3 + 1000)/p;benjin = (x2 + 1000)/p;printf(本金为:%f,benjin);6.7#includemain()double count = 0, c , d , sum = 100;printf(Input c :);scanf(%lf,&c);d = c / 100.0;dosum = sum * (1+d);count+;while (sum = 200);printf(count =
18、 %fn,count);6.8#include#includemain()int count = 1;double sum = 1.0 ,term,n = 3.0,i = 1.0;do term = -i/n;sum = sum + term;n = n + 2;i = -i;count+;while (fabs(term) = 1e-5);printf( = %lf,count = %d.n,4 * sum,count);6.9#include #include main()int count = 1;double sum = 1.0 , term = 1.0, n = 1.0;while
19、(fabs(term) = 1e-5)term = term / n;sum = sum + term;n+;count+;printf(e = %lf,count = %d.n,sum,count);6.10#include main()int i , a , b , c ,d;for (i = 100 ; i = 999 ; i+)a = i /100; c = i % 10; b = (i - a * 100 - c) / 10;d = a * a * a + b * b * b + c * c * c;if (i = d)printf(i = %dn,i);6.11#include m
20、ain()long m = 2 , n , term = 1 ,sum = 1;printf(Input n:);scanf(%ld,&n);do term = term * m;sum = sum + term ;m+;while(sum = n);printf(m = %d.n,m - 2);6.12#include main()int num = 1,sum = 0 , count = 0;while (num 0)printf(Input num :);scanf(%d,&num);sum = sum + num ;count+;printf (sum = %d,count = %d.
21、n,sum, count - 1);6.13#include main()int term , sum = 0 , count = 0;do begin:printf(Input term : );scanf (%d,&term);if (term 0)sum = sum + term ;count+;else if (term 0)goto begin;else goto end ;while (term != 0);end : printf (sum = %d. count = %d.n,sum,count );6.14#include main()int a,b,c;for (a = 0
22、;a 17;a+)for (b = 0;b = 25 ;b+)c = 30 - a - b ;if (a * 3 + b * 2 + c = 50)printf (男 = %d,女 = %d,孩子 = %d.n,a,b,c);6.15#includemain()int a,b;for (a = 0; a =98 ; a+)b = 98 - a;if (a * 2 + b * 4 = 386)printf (鸡有%d只,免有%d只.n,a,b);6.16#include main()int x,y,z;for (x = 0;x = 20;x+)for (y = 0;y = 33;y+)z = 1
23、00 - x - y;if (5 * x + 3 *y + z / 3.0 = 100)printf (x = %d,y = %d,z = %dn,x, y, z);6.17不确定#includemain()int x, y, z;for (x = 1; x 10; x+)for (y = 1; y 20; y+)z = 50 - x - y;if (x * 10 + y * 5 + z = 100)printf(x = %d, y = %d, z = %dn,x ,y ,z);6.18上：#includemain()int i, j;for (i = 1; i = 9; i+)for (j
24、= 1; j = 9; j+)printf(%-5d,i * j);printf(n);左：#includemain()int i, j;for (i = 1; i = 9; i+)for (j = 1; j = i; j+)printf(%-5d,i * j);printf(n);右：#include main()int i, j, a = 1, k;char b = ;for (i = 1; i = 9; i+)for (k = 1; k = i; k+)printf(%5c,b);for(j = i; j = 9; j+)a=j * i;printf(%5d,a);printf(n);6
25、.19#includemain()long i,summo;double sumfu = 0,term = 0.01;summo = 100000 * 30;for (i = 1;i = 30;i+)term = term * 2.0;sumfu = sumfu + term;printf(陌生人付%ld,富翁付%lf.n,summo,sumfu );本章实验题2.1#include#include#includemain()int x1, x2, c, answer;begin:srand(time(NULL);x1 = rand() % 10 + 1;x2 = rand() % 10 +
26、1;c = x1 * x2;do printf (%d * %d = n,x1, x2);scanf(%d,&answer);if (c = answer)printf(Right !n);goto begin;else printf(Wrrong !Please try again.n);while(c != answer);2.2#include#include#includemain()int x1, x2, c, answer, count = 0;begin:srand(time(NULL);x1 = rand() % 10 + 1;x2 = rand() % 10 + 1;c =
27、x1 * x2;do printf (%d * %d = n,x1, x2);scanf(%d,&answer);if (c = answer)printf(Right !n);goto begin;else printf(Wrrong !Please try again.n);count+;while(c != answer)&(count = 2);printf (Wrong ! You have tried three times ! Test over !n);2.3#include#include#includemain()int count1 = 0, count2 = 0;int x1, x2, c, answer ,i;for (i = 1;i = 10; i+)srand(time(NULL); x1 = rand() % 10 + 1; x2 = rand() % 10 + 1; c = x1 * x2;printf (%d * %d = n,x1 , x2 );scanf(%d,&answer);if (c = answer)printf (Right !n);count1+;else printf (Wrong !n);count2+;printf (你得了%d分.n正确率为%d %.n,count1,count1 *10);