50道C++编程练习题及解答1/850道C/C++编程练习题1、输入3个数，求最大值intmain(){inta,b,c,m;cin>>a>>b>>c;m=a;if(b>m)m=b;if(c>m)m=c;cout<
#includeusingnamespacestd;intmain(){doublea,b,c,d,x1,x2;cin>>a>>b>>c;if(a==0)if(b==0)cout<<"error\n";elsecout<<"x="<<-c/b<1e-6){x1=(-b+sqrt(d))/(2*a);x2=(-b-sqrt(d))/(2*a);cout<<"x1="<>a;if(a>=90)cout<<"A";elseif(a>=80)cout<<"B";elseif(a>=70)cout<<"C";elseif(a>=60)cout<<"D";elsecout<<"E";}4、输入3个double种类的值，判断这3个值能否能够表示一个三角形的三条边。intmain(){doublea,b,c;cin>>a>>b>>c;if(a+b>c&&b+c>a&&c+a>b)cout<<"能够组成三角形";elsecout<<"不能够组成三角形";}5、输入20个数，求其最大、最小和均匀值intmain(){inti;inta,max,min,s;cin>>a;max=min=a;s=a;for(i=1;i<20;i++){cin>>a;if(a>max)max=a;if(a>n;cin>>a;m=a;s=a;for(inti=1;i>a;s+=a;if(a>m)m=a;}cout<<"均匀值："<<(double)s/n<<"，最大值："<#include#includeusingnamespacestd;t=1;s=0;for(i=1;i<=10;i++){t=t*i;s=s+t;intmain()}{intn,count,sum,max;}doubleave;count=0;cin>>n;sum=0;max=n;while(n!=-999){sum=sum+n;if(n>max)max=n;count++;cin>>n;}11、求e=1+1/1!+1/2!+1/3!+...intmain(){inti;doublet,e;i=1;t=1;e=1;while(t>=1e-7){t=t/i;e=e+t;i=i+1;if(count!=0){ave=static_cast(sum)/count;}cout<1e-8){pi=pi+t;i=i+2;k=-k;t=double(k)/i;}cout<<4*pi;}}9、印度国王的奖赏，乞降intmain(){doublet=1,s=0;for(inti=0;i<=63;i++){s=s+t;s=20+21+22+...+26313、求PI值，PI/2=1+1/3+1/3*2/5+1/3*2/5*3/7+...#include#includeintmain(){t=2*t;}cout<1e-18){pi=pi+t;i=i+1;j=j+2;t=t*i/j;longt,s;}50道C++编程练习题及解答3/8cout<>a;{i=a*100+b*10+c;if(a>0)n++;if(i==a*a*a+b*b*b+c*c*c)elseif(a<0)m++;cout<>a;if(n%i==0)s=s+i;while(a!=0)if(s==n)return1;{if(a%2==0)n+=a;;elsereturn0;elsem+=a;}cin>>a;intmain()}{intn;cout<
