C语言程序设计方案答案

1、C语言程序设计答案/3-1矩形面积#includevoidmain()floata,b;floatc,area;printf(nPleaseInputa,b:);scanf(%f%f,&a,&b);c=(a+b)*2;area=a*b;printf(c=%f,area=%fn,c,area);/3-2输入三位数，输出它各个数位上的数字#includevoidmain()三位整数:);三位整数:);intm,a,b,c;printf(nPleaseInputscanf(%d,&m);a=m/100;b=m/10%10;c=m%10;printf(a=%d,b=%d,c=%dn,a,b,c);/3

2、-3大写字母转换#includevoidmain()charch;大写字母:);大写字母:);printf(nPleaseInputscanf(%c,&ch);ch=(ch=A&ch=Z)?ch=ch+32:ch;printf(ch=%cn,ch);/3-3大写字母转换方法二#includevoidmain()charch;printf(nPleaseInput大写字母:);scanf(%c,&ch);if(ch=A&ch=Z)ch=ch+32;printf(ch=%cn,ch);/4-1已知圆半径和高，求周长，面积，表面积，体积和圆柱体积#definePI3.14#include#inclu

3、devoidmain()doubler,h,c,area,s,v,u;printf(n请输入圆的半径和高:);scanf(%lf%lf,&r,&h);c=2*PI*r;area=PI*pow(r,2);s=4*PI*pow(r,2);v=4.0/3*PI*pow(r,3);u=PI*pow(r,2)*h;printf(c=%lf,area=%lf,s=%lf,v=%lf,u=%lfn,c,area,s,v,u);/4-2输入华氏温度求摄氏温度#includevoidmain()floatF,C;printf(n请输入F:);scanf(%f,&F);C=(F-32)*5/9;printf(C=

4、%fn,C);/4-3输入五位整数，将它反向输出#includevoidmain()intm,a,b,c,d,e,f;printf(请输入五位整数:);scanf(%d,&m);a=m/10000;b=(m-a*10000)/1000;c=(m-a*10000-b*1000)/100;d=(m-a*10000-b*1000-c*100)/10;e=m-a*10000-b*1000-c*100-d*10;f=e*10000+d*1000+c*100+b*10+a;printf(%d对调后是%dn,m,f);/4-4人口#include#includevoidmain()doublen,r;r=0

5、.8/100;n=log(2)/log(r+1);printf(n%lf年后我国人口超过26亿,n);/4-5求二点间的距离#include#includevoidmain()floatx1,y1,x2,y2,l;printf(请输入平面坐标系中二个点的坐标scanf(%f%f%f%f,&x1,&y1,&x2,&y2);l=pow(pow(x1-x2,2)+pow(y1-y2,2),0.5);printf(二点之间的距离为l=%fn,l);/求两点间的距离方法2#include#includevoidmain()floatx1,y1,x2,y2,l;printf(请输入平面坐标系中二个点的坐标

6、scanf(%f%f%f%f,&x1,&y1,&x2,&y2);x1y1x2y2:);x1y1x2y2:);l=sqrt(pow(x1-x2,2)+pow(y1-y2,2);printf(二点之间的距离为l=%fn,l);/4-6矩形草坪，求所需时间#defineV0.18#includevoidmain()floata,b,t;printf(请输入矩形草坪的长和宽:);scanf(%f%f,&a,&b);t=a*b/V;printf(所需时间t=%fn,t);/4-7实发工资#includevoidmain()inta;doubleb,m;printf(请输入基本工资a=800和本月的营业额

7、b:n);scanf(a=%d%lf,&a,&b);m=a+b*5.0/100;printf(实发工资为%lf元,m);/4-8冰箱断电后温度#includevoidmain()doublea,b,t,T;printf(请输入冰箱断电后的小时数a和分钟数b:);scanf(%lf%lf,&a,&b);t=a+b/60;T=4*t*t/(t+2)-20;printf(”断电%lf小时后冰箱内的温度为%lf摄氏度,t,T);/4-9社区人数#includevoidmain()intm;doublea,b;printf(请输入社区的人数m:);scanf(%d,&m);a=(15-2)*14*(fl

8、oat)m/3;b=a/1000*3.4*365*10-1000*(float)m/3;printf(每天节约的用水量为%lf升,节约的开销为%lf元,a,b);/5-1输入整数，判断其是否能同时被6,9,14整出。#includevoidmain()inta;scanf(%d,&a);if(a%6=0&a%9=0&a%14=0)printf(能同时被6,9,14整除n);elseprintf(不能同时被6,9,14整除n);/5-2输入一个年号，判断该年号是否闰年#includevoidmain()longa;printf(n请输入一个年号:)scanf(%ld,&a);if(a%4=0&a

9、%100!=0)|(a%400=0)printf(是闰年n);elseprintf(不是闰年n);/5-3.将4个变量由大到小排列#includevoidmain()floata,b,c,d,t;scanf(%f%f%f%f,&a,&b,&c,&d);if(ab)t=a,a=b,b=t;if(ac)t=a,a=c,c=t;if(ad)t=a,a=d,d=t;if(bc)t=b,b=c,c=t;if(bd)t=b,b=d,d=t;if(cd)t=c,c=d,d=t;printf(a=%fb=%fc=%fd=%f,a,b,c,d);/5-4.输入一个字符，判断其类型#includevoidmain

10、()chara;scanf(%c,&a);if(48=a&a=57)printf(a是数字);elseif(65=a&a=90)printf(a是大写字母);elseif(97=a&a=122)printf(a是小写字母);elseprintf(a是其他字符);5-5输入X,求f(x);#includevoidmain()floatx,y;scanf(%f,&x);if(x=0&x=10&x100)y=2*x+100;elsey=x*x;printf(%gn,y);/5-6.输入a,b,按公式计算Y#include#includevoidmain()floata,b,y;printf(nple

11、aseinputa,b:);scanf(%f%f,&a,&b);if(a0&b0)y=log(a)+log(b);elseif(a0&b=0)y=sin(a)+sin(b);elseif(0=a)y=sin(a)+cos(b);printf(y=%fn,y);/5-7.输入分子和分母，判断其满足题意条件否#includevoidmain()inta,b,x,y;scanf(%d%d,&a,&b);x=a/10;y=b%10;if(a%10)=(b/10)if(1.0*a/b)=(1.0*x/y)printf(符合条件n);elseprintf(不符合条件n);elseprintf(不符合条件n

12、);/5-8输入3位整数，判断满足条件否#includevoidmain()intx,a,b,c,y;scanf(%d,&x);y=x/9;a=x/100;b=x/10%10;c=x%10;if(y=a*a+b*b+c*c)printf(符合条件n);elseprintf(不符合条件n);/5-9.判断2位整数是否为守形数#includevoidmain()intx,a,b,c,y;scanf(%d,&x);y=x*x;a=y/10%10;b=x%10;c=10*a+b;if(x=c)printf(是守形数n);/99de2cifangelseprintf(不是守形数n);/5-10输入上衣和

13、裤子数目，计算收款总额#includevoidmain()inta,b,x,y;scanf(%d%d,&a,&b);if(a=50&b=50)if(ab)y=80*b+60*(a-b);elsey=80*a+45*(b-a);elseif(ab)y=90*b+60*(a-b);elsey=90*a+45*(b-a);printf(%dn,y);/5-11.计算输出税金#includevoidmain()floatx,y;scanf(%f,&x);if(x=10000)y=x*0.05;elseif(x=5000&x=5000就行了y=x*0.03;elseif(x=1000&x5000)y=x

14、*0.02;elsey=0;printf(%gn,y);/5-12.计算个人所得税金额#includevoidmain()floata,b,c,d,e,f,g,h,i,j,x,y;printf(Pleaseinputan:);scanf(%f,&a);b=0.05*(a-1600);c=0.1*(a-2100);d=0.15*(a-3600);e=0.2*(a-6600);f=0.25*(a-21600);g=0.3*(a-41600);h=0.35*(a-61600);i=0.4*(a-81600);j=0.45*(a-101600);x=a/1000;if(x=1.6)y=0;if(1.6

15、x&x=2.1)y=b;elseif(2.1x&x=3.6)y=25+c;elseif(3.6x&x=6.6)y=25+150+d;elseif(6.6x&x=21.6)y=25+150+450+e;elseif(21.6x&x=41.6)y=25+150+450+3000+f;elseif(41.6x&x=61.6)y=25+150+450+3000+5000+g;elseif(61.6x&x=81.6)y=25+150+450+3000+5000+6000+h;elseif(81.6x&x=101.6)y=25+150+450+3000+5000+6000+7000+i;elseif(10

16、1.6x)y=25+150+450+3000+5000+6000+7000+8000+j;printf(”应纳个人所得税为gn,y);/5-13输入年和月份，判断该月对应天数#includevoidmain()inty,m;printf(npleaseinputym:);scanf(%d%d,&y,&m);if(y%4=0&y%100)|y/400!=0)switch(m)case1:case3:case5:case7:case8:case10:case12:printf(天数31天”);break;case2:printf(天数29);break;case4:case6:case9:case

17、11:printf(”天数30天”);break;elseswitch(m)case1:case3:case5:case7:case8:case10:case12:printf(天数31天”);break;case2:printf(天数28);break;case4:case6:case9:case11:printf(”天数30天”);break;default:printf(Errorn);/5-14计算总运费#includevoidmain()intf,w,s,d,p,t;printf(npleaseinputpws);scanf(%d%d%d,&p,&w,&s);t=p*w*s;if(s

18、=250)f=t;elseif(s500)f=p*w*s*(1-0.02);elseif(s1000)f=p*w*s*(1-0.05);elseif(s2000)f=t*(1-0.08);elseif(s=3000)f=t*(1-0.15);printf(总费用%d,f);/6-1计算2*x*x+3*x+1#includevoidmain()inti;longs;for(s=0,i=1;i=20;i+)s=s+2*i*i+3*i+1;printf(%ldn,s);/6-2打印1-10000中的所有闰年#includevoidmain()infannHO八for(aHaAH10000ai+)if

19、(a%4H0QOQOa%100H0)-(a%400H0)宀n+if(n%1020)pinff(=%62n=axe-sepinff(=%6d=a)八琴c-udecssio.hvvoidmain。宀doub-enMnHO八fo(yH13_yAH26_)宀n+yuy+y*0.008八pinff(fn=m=64琴c-udecssio.hvvoidmain。宀三7、27doubles;for(s=0,i=1;1.0/(i*i)=0.000001;i+)s=s+1.0/(i*i);printf(%lfn,s);/6-5计算圆周率#includevoidmain()inti;doubles;for(s=2,

20、i=1;i=1000;i+)s=s*2*i*2*i/(2*i-1)*(2*i+1);printf(%lfn,s);/6-6计算分序数列#includevoidmain()inti,t,m,k;doubles;for(m=1,k=2,s=2,i=1;i=19;i+)t=k+m;m=k;k=t;s=s+(float)k/m;printf(%lfn,s);/6-7#include#includevoidmain()intn;floatt,y,s;n=1;t=1,y=1,s=0;while(y=pow(10,-6)y=1/t;s=s+y;t=t+n;n+;printf(s等于%fn,s);/6-8求1

21、-10的阶乘之和#includevoidmain()intn;doubley,s;n=1;y=0,s=1;while(n=10)s=s*n;y=y+s;n+;printf(y等于%lfn,y);的和6-9输入X和N,求X+XA2+.+XAN#includevoidmain()intn,i,k;floatx,s;printf(npleaseinputx,n:);scanf(%f%d,&x,&n);for(k=1,s=0,i=1;i=n;i+)k=k*x;s=s+k;printf(s=%fn,s);/6-9方法二#include#includevoidmain()intn,i;doublex,y,

22、s;i=1,y=0;printf(请输入x,nn);scanf(%lf%d,&x,&n);while(i=n)s=pow(x,i);y=y+s;i+;printf(y等于%lfn,y);/6-10求自然对数e#include#includevoidmain()intn;doublet,y,s;n=1;y=1,s=1;while(fabs(y-exp(1)0.00001)s=s*n;t=1/s;y=y+t;n+;printf(y等于%lfn,y);/6-11求eAx#include#includevoidmain()intn;doublex,s,y;s=1,y=1;printf(请输入x:);s

23、canf(%lf,&x);for(n=1;n=100;n+)s=s*n;y=y+pow(x,n)/s;printf(%lf,y);/6-12所有的水仙花数#includevoidmain()intn,i,a,b,c;n=0;for(i=100;i=999;i+)a=i/100;b=i/10%10;c=i%10;if(i=a*a*a+b*b*b+c*c*c)n+;if(n%10=0)printf(%6dn,i);elseprintf(%6d,i);/6-13求s=a+aa+aaa+.+a(n个a)#includevoidmain()intn,i;floata,t,s;printf(nplease

24、inputa,n:);scanf(%f%d,&a,&n);for(t=0,s=0,i=1;i=n;i+)t=t*10+a;s=s+t;printf(s=%fn,s);/6-14所有的守形数#include#defineM2#defineN1000000voidmain()intnum,count=0,i,j,lenth=0;printf(从小到c之中的守形数n,M,N);for(i=M;i=N;i+)num=i;j=1;while(num!=0)num=num/10;lenth+;while(lenth!=0)j=10*j;lenth-;if(i*i-i)%j=0)printf(%dt,i);

25、count+;printf(n共有%d个,count);/6-15100以内的勾股数#includevoidmain()intx,y,z;printf(xyzn);for(x=0;x=100;x+)for(y=0;y=100;y+)for(z=0;z=100;z+)if(xy&yz&z*z=x*x+y*y)printf(%5d%5d%5dn,x,y,z);/6-161000以内的完数#includevoidmain()intm,i,s;printf(suoyouwanshun:);for(m=1;m=1000;m+)for(s=0,i=1;i=m-1;i+)if(m%i=0)s=s+i;if(

26、s=m)printf(%6dn,m);/6-17计算整数M和N的公约数之和#includevoidmain()longm,n,i,s;printf(qingshurum,n:);scanf(%ld%ld,&m,&n);if(mn)i=n;elsei=m;for(s=0;i=1;i-)if(m%i=0&n%i=0)s=s+i;printf(%ldn,s);/6-18#includevoidmain()inti,j;for(i=1;i=5;i+)for(j=1;j=5-i;j+)printf();printf(*n)/6-19搬砖问题#includevoidmain()intx,y,z;printf(nanrennvrenxiaohain);for(x=0;x=0&z=0)printf(%6d%6d%6dn,x,y,z);/6-20爱因斯坦阶梯问题#includevoidmain()longi;for(i=1;i=1000;i