代码来啦·~~~~~~~~

最新推荐文章于 2023-06-01 10:15:00 发布

weixin_34124577

最新推荐文章于 2023-06-01 10:15:00 发布

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CC 4.0 BY-SA版权

原文链接：http://www.cnblogs.com/lyy131/p/7247654.html

本文提供了一系列C++编程基础题目的解决方案，包括简单的数学计算、条件判断、循环操作及字符串处理等内容，适合初学者练习。

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View Code

 1 #include<iostream>
 2 using namespace std;
 3 int main()
 4 {
 5     int a,b;
 6     cin>>a>>b;
 7     int c;
 8     c=a+b;
 9     cout<<c<<endl;
10     return 0;
11 }

P1000

 1 #include<iostream>
 2 using namespace std;
 3 int main()
 4 {
 5     int x,y;
 6     cin>>x>>y;
 7     int average;
 8     average=(87*x+85*y)/(x+y);
 9     cout<<average<<endl;
10     return 0;
11 }
12

P1001

 1 #include<iostream>
 2 using namespace std;
 3 int main()
 4 {
 5     int x;
 6     cin>>x;
 7     int ge,shi,bai;
 8     ge=x%10;  bai=x/100;  shi=x/10%10;
 9     x=ge*100+shi*10+bai;
10     cout<<x<<endl;
11     return 0;
12 }

P1002

 1 #include<iostream>
 2 using namespace std;
 3 int main()
 4 {
 5     int x1,x2,x3,x4,x5;
 6     cin>>x1>>x2>>x3>>x4>>x5;
 7     x1=x1/3; x2=x2+x1; x5=x5+x1;
 8     x2=x2/3; x1=x1+x2; x3=x3+x2;
 9     x3=x3/3; x2=x2+x3; x4=x4+x3;
10     x4=x4/3; x3=x3+x4; x5=x5+x4;
11     x5=x5/3; x4=x4+x5; x1=x1+x5;
12     cout<<x1<<' '<<x2<<' '<<x3<<' '<<x4<<' '<<x5<<endl;
13     return 0;
14 }

P1003

 1 #include<iostream>
 2 using namespace std;
 3 int main()
 4 {
 5     int x,y,m,n;
 6     cin>>x>>y;
 7     n=(y-x*2)/2;
 8     m=x-n;
 9     cout<<m<<' '<<n<<endl;
10     return 0;
11 }

P1004

 1 #include<iostream>
 2 using namespace std;
 3 int main()
 4 {
 5     char ch1,ch2;
 6     int chi,k;
 7     cin>>ch1>>k;
 8     ch2=ch1+k;
 9     cout<<ch2<<endl;
10     return 0;
11 }

P1005

 1 #include<iostream>
 2 using namespace std;
 3 int main()
 4 {
 5     int x;
 6     cin>>x;
 7     int Y,M,D;
 8     Y=1970+x/(12*30*24*3600);
 9     M=1+x%(12*30*24*3600)/(30*24*3600);
10     D=1+x%(12*30*24*3600)%(30*24*3600)/(24*3600);
11     cout<<Y<<' '<<M<<' '<<D<<endl;
12     return 0;
13 }

P1006

 1 #include<iostream>
 2 #include<iomanip>
 3 using namespace std;
 4 int main()
 5 {
 6     int r;
 7     double C,S;
 8     cin>>r;
 9     C=2*3.14*r;
10     S=3.14*r*r;
11     cout<<setiosflags(ios::fixed)<<setprecision(2);
12     cout<<C<<endl;
13     cout<<S<<endl;
14     return 0;
15 }

P1007

 1 #include<iostream>
 2 #include<iomanip>
 3 #include<cmath>
 4 using namespace std;
 5 int main()
 6 {
 7     int a,b,c;
 8     cin>>a>>b>>c;
 9     double p;
10     p=(a+b+c)/2.0;
11     double m;
12     m=sqrt((double) p*(p-a)*(p-b)*(p-c));
13     cout<<setiosflags(ios::fixed)<<setprecision(2);
14     cout<<m<<endl;
15     return 0;
16 }

P1008

 1 #include<iostream>
 2 #include<iomanip>
 3 using namespace std;
 4 int main()
 5 {
 6     int x,y,z;
 7     cin>>x>>y>>z;
 8     int m;
 9     m=(6*x-(6*x-5*y)-(6*x-5*z))/4;
10     cout<<setiosflags(ios::scientific)<<setprecision(1);
11     cout<<m<<endl;
12     return 0;
13 }

P1009

P1010

 1 #include<iostream>
 2 using namespace std;
 3 int main()
 4 {
 5     char ch;
 6     cin>>ch;
 7     if((ch>='0')&&(ch<='9'))  cout<<int(ch)<<endl;
 8     if((ch>='A')&&(ch<='Z'))  cout<<char(ch-'A'+'a')<<endl;
 9     if((ch>='a')&&(ch<='z'))  cout<<char(ch-'a'+'A')<<endl;
10     return 0;
11 }
12     
13

P1011

 1 #include<iostream>
 2 using namespace std;
 3 int main()
 4 {
 5     int a;
 6     cin>>a;
 7     if(a<=10)  cout<<10*a<<endl;
 8     if(a>10)   cout<<8*a<<endl;
 9     return 0;
10 }

P1012

#include<iostream>
using namespace std;
int main()
{
    int a,b,c;
    cin>>a>>b>>c;
    if((a>b)&&(b>c))  cout<<a<<'>'<<b<<'>'<<c<<endl;
    if((a>c)&&(c>b))  cout<<a<<'>'<<c<<'>'<<b<<endl;    
    if((b>a)&&(a>c))  cout<<b<<'>'<<a<<'>'<<c<<endl;
    if((b>c)&&(c>a))  cout<<b<<'>'<<c<<'>'<<a<<endl;
    if((c>a)&&(a>b))  cout<<c<<'>'<<a<<'>'<<b<<endl;
    if((c>b)&&(b>a))  cout<<c<<'>'<<b<<'>'<<a<<endl;
    return 0;
}

P1013

#include<iostream>
using namespace std;
int main()
{
    int a;
    cin>>a;
    if((a%4==0)&&(a%100!=0)||(a%400==0))  cout<<"Leap Year!"<<endl;
    else cout<<"Common Year!"<<endl;
    return 0;
}

P1014

 1 #include<iostream>
 2 #include<iomanip>
 3 using namespace std;
 4 int main()
 5 {
 6     int x;
 7     cin>>x;
 8     double y;
 9     if(x<0)  
10     {
11         y=0;
12     }
13     if((x>=0)&&(x<10))  
14     {
15         y=2*x;
16     }
17     if((x>=10)&&(x<50))
18     {
19         y=2*x+1;
20     }
21     if(x>=50)  
22     {
23         y=x/2.0+50;
24     }
25     cout<<setiosflags(ios::fixed)<<setprecision(4);
26     cout<<y<<endl;
27     return 0;
28 }

P1015

 1 #include<iostream>
 2 using namespace std;
 3 int main()
 4 {
 5     int x;
 6     cin>>x;
 7     if(x==0)  cout<<"Sunday"<<endl;
 8     if(x==1)  cout<<"Monday"<<endl;
 9     if(x==2)  cout<<"Tuesday"<<endl;
10     if(x==3)  cout<<"Wednesday"<<endl;
11     if(x==4)  cout<<"Thursday"<<endl;
12     if(x==5)  cout<<"Friday"<<endl;
13     if(x==6)  cout<<"Saturday"<<endl;
14     if((x<0)||(x>6))  cout<<"error"<<endl;
15     return 0;
16 }

P1016

 1 #include<iostream>
 2 using namespace std;
 3 int main()
 4 {
 5     int x,y;
 6     cin>>x>>y;
 7     char ch;
 8     cin>>ch;
 9     if(ch=='+') cout<<x+y<<endl;
10     if(ch=='-') cout<<x-y<<endl;
11     if(ch=='*') cout<<x*y<<endl;
12     if(ch=='/') 
13         if(y==0) cout<<"error"<<endl;
14         else cout<<x/y<<endl;
15     return 0;
16 }

P1017

 1 #include<iostream>
 2 using namespace std;
 3 int main()
 4 {
 5     int a,b,c;
 6     cin>>a>>b>>c;
 7     if((a+b>c)&&(a+c>b)&&(b+c>a))
 8     {    
 9         if(a==b&&b==c) 
10             cout<<"yse"<<endl;
11         else  
12             cout<<"no"<<endl;    
13         if((a==b)||(b==c)||(a==c))
14             cout<<"yse"<<endl;
15         else
16             cout<<"no"<<endl;
17         cout<<"yse"<<endl;
18     }    
19     else
20         cout<<"no"<<endl<<"no"<<endl<<"no";
21     return 0;
22 }

P1018

 1 #include<iostream>
 2 #include<iomanip>
 3 #include<cmath>
 4 using namespace std;
 5 int main()
 6 {
 7     int a,b,c;
 8     cout<<setiosflags(ios::fixed)<<setprecision(4);
 9     cin>>a>>b>>c;
10     if(b*b-4*a*c>0)
11     {
12         double x=(-b-sqrt(double(b*b-4*a*c)))/2/a;
13         double y=(-b+sqrt(double(b*b-4*a*c)))/2/a;
14         if(x<y)
15             cout<<x<<endl<<y;
16         else
17             cout<<y<<endl<<x;
18     }
19     if((b*b-4*a*c)==0)
20         cout<<(-b+sqrt(1.0*(b*b-4*a*c)))/2/a<<endl;
21     if((b*b-4*a*c)<0)
22         cout<<"No Answer!"<<endl;
23     return 0;
24 }

P1019

 1 #include<iostream>
 2 using namespace std;
 3 int main()
 4 {
 5     int sum=0,n;
 6     cin>>n;
 7     for(int i=1;i<=n;i++) sum=sum+i;
 8     cout<<sum<<endl;
 9     return 0;
10 }

P1020

 1 #include<iostream>
 2 #include<iomanip>
 3 #include<cmath>
 4 using namespace std;
 5 int main()
 6 {
 7     int a,b,sum=0;
 8     cin>>a>>b;
 9     for(int i=a;i<=b;i++)
10     {
11         if(i%2==1)
12             sum+=i;
13     }
14     cout<<sum<<endl;
15     return 0;
16 }

P1021

 1 #include<iostream>
 2 using namespace std;
 3 int main()
 4 {
 5     int k,y,i;
 6     cin>>k;
 7     for(i=10;i<100;i++)
 8     {
 9         y=i/10+i%10*10;
10         if((y-i)==k)  cout<<i<<endl;
11     }
12     return 0;
13 }

P1022

 1 #include<iostream>
 2 #include<iomanip>
 3 #include<cmath>
 4 using namespace std;
 5 int main()
 6 {
 7     long long n,sum=0;
 8     cin>>n;
 9     for(int i=1;i<=sqrt(double (n));i++)
10     {
11         if(n%i==0)
12         {
13             sum+=i;
14         if(i!=n/i)sum+=n/i;
15         }
16     }
17     cout<<sum<<endl;
18     return 0;
19 }

p1023

 1 #include<iostream>
 2 #include<iomanip>
 3 #include<cmath>
 4 using namespace std;
 5 int main()
 6 {
 7     char ch;
 8     cin>>ch;
 9     for(char i='a';i<=ch;i++)
10             cout<<i;
11     for(char i=ch-1;i>='a';i--)
12             cout<<i;
13     return 0;
14 }
15

p1024

 1 #include<iostream>
 2 using namespace std;
 3 int main()
 4 {
 5     int n,x,sum=0,maxx,minn,i;
 6     cin>>n;
 7     maxx=-10000000;minn=10000000;
 8     for(int i=0;i<n;i++)
 9     {
10         cin>>x;
11         sum+=x;
12         if(x>maxx) maxx=x;
13         if(x<minn) minn=x;
14     }
15     cout<<maxx<<endl;
16     cout<<minn<<endl;
17     cout<<sum/n<<endl;
18     return 0;
19 }

p1025

 1 #include<iostream>
 2 #include<iomanip>
 3 #include<cmath>
 4 using namespace std;
 5 int main()
 6 {
 7     long long sum=1;
 8     int a,b;
 9     cin>>a>>b;
10     for(int i=a;i<=b;i++) sum=sum*i;
11     cout<<sum<<endl;
12     return 0;
13 }

p1026

 1 #include<iostream>
 2 #include<iomanip>
 3 #include<cmath>
 4 using namespace std;
 5 int main()
 6 {
 7     int n;
 8     bool flag=true;
 9     cin>>n;
10     for(int i=2;i<=sqrt(n*1.0);i++)
11         if(n%i==0)
12         {
13             flag=false; break;
14         }
15     if(flag&&n!=1) cout<<"Yes"<<endl;
16     else cout<<"No"<<endl;
17     return 0;
18 }

p1027

 1 #include<iostream>
 2 #include<iomanip>
 3 #include<cmath>
 4 using namespace std;
 5 int main()
 6 {
 7     int k,m;
 8     int flag=0;
 9     cin>>k;
10     for(int i=1000;i<=9999;i++)
11     {
12         m=(i/100+i%100)*(i/100+i%100);
13         if(i==m)
14         {
15             flag++;
16             if(flag==k) 
17                     cout<<m<<endl;
18         }
19     }
20     return 0;
21 }

p1028

 1 #include<iostream>
 2 #include<iomanip>
 3 #include<cmath>
 4 using namespace std;
 5 int main()
 6 {
 7     int n;
 8     cin>>n;
 9     int ans=1;
10     for(int i=n;i>1;ans++)
11     {
12         if(i%2==0) i/=2;
13         else i=i*3+1;
14     }
15     cout<<ans<<endl;
16     return 0;
17 }

p1029

 1 #include<iostream>
 2 #include<iomanip>
 3 #include<cmath>
 4 using namespace std;
 5 int main()
 6 {
 7     int n=1,x;
 8     double sum=0;
 9     for(int i=0;i<n;i++)
10     {
11         cin>>x;
12         sum+=x;
13         if(x!=0) n++;
14         else continue;
15     }
16     cout<<setiosflags(ios::fixed)<<setprecision(1);
17     cout<<sum/(n-1)<<endl;
18     return 0;
19 }

p1030

 1 #include<iostream>
 2 #include<cmath>
 3 #include<iomanip>
 4 using namespace std;
 5 int main()
 6 {
 7     int n,sum=0,i=0;
 8     cin>>n;
 9     while(n>0)
10     {
11         sum+=n%10;
12         n/=10;
13         i++;
14     }
15     cout<<i<<endl;
16     cout<<sum<<endl;
17     return 0;
18 }
19

p1031

 1 #include<iostream>
 2 #include<iomanip>
 3 #include<cmath>
 4 using namespace std;
 5 int main()
 6 {
 7     long long n,s=0;
 8     cin>>n;
 9     while(n>0)
10     {
11         s=s*10+n%10;
12         n=n/10;
13     }
14     cout<<s<<endl;
15     return 0;
16 }

p1032

 1 #include<iostream>
 2 #include<iomanip>
 3 #include<cmath>
 4 using namespace std;
 5 int main()
 6 {
 7     long long m,n=0;
 8     cin>>m;
 9     while(m>1)
10     {
11         m/=2;
12         n++;
13     }
14     cout<<n<<endl;
15     return 0;
16 }
17

p1033

 1 #include<iostream>
 2 #include<iomanip>
 3 #include<cmath>
 4 using namespace std;
 5 int main()
 6 {
 7     long long x,n=0;
 8     double s=0;
 9     cin>>x;
10     while(s<=x)
11     {
12         n++;
13         s=s+1.0/n;
14     }
15     cout<<n<<endl;
16     return 0;
17 }

p1034

 1 #include<iostream>
 2 #include<cmath>
 3 #include<iomanip>
 4 #include<cstdio>
 5 using namespace std;
 6 int main()
 7 {
 8     long long a,b,x,y,maxx;
 9     cin>>a>>b;
10     maxx=-100000000;
11      for(int i=1;(i<=a)&&(i<=b);i++)
12     {
13         if((a%i==0)&&(b%i==0))
14         x=i;
15         if(i>maxx) maxx=i;
16     }
17     for(y=1;;y++)
18     {
19         if((y%a==0)&&(y%b==0)) break;
20     }
21     cout<<x<<' '<<y<<endl;
22     return 0;
23 }

p1035

 1 #include<iostream>
 2 using namespace std;
 3 int main()
 4 {
 5     int m,n;
 6     cin>>m>>n;
 7     for(int i=1;i<=m;i++)
 8     {
 9         for(int j=1;j<n;j++)cout<<'*'<<' ';
10         cout<<'*'<<endl;
11     }
12     return 0;
13 }

p1036

 1 #include<iostream>
 2 using namespace std;
 3 int main()
 4 {
 5     int m,n,i,j;
 6     cin>>m>>n;
 7     for(i=1;i<=m;i++)
 8     {
 9         for(j=1;j<=m-i;j++) cout<<' ';
10             for(j=1;j<n;j++) cout<<"* ";
11             cout<<'*'<<endl;
12     }
13     return 0;
14 }

p1037

 1 #include<iostream>
 2 #include<iomanip>
 3 #include<cmath>
 4 #include<cstdio>
 5 using namespace std;
 6 int main()
 7 {
 8     int m,i,j;
 9         cin>>m;
10         for(i=1;i<=m;i++)
11         {
12             for(j=1;j<=m-i;j++) cout<<' ';
13             for(j=1;j<2*i-1;j++) cout<<'*';
14             cout<<'*'<<endl;
15         }
16         return 0;
17 }

p1038

 1 #include<iostream>
 2 using namespace std;
 3 int main()
 4 {
 5     int n,j,i;
 6     cin>>n;
 7     for(i=1;i<=n;i++)
 8     {
 9         for(j=1;j<=n-i;j++) cout<<' ';
10         for(j=1;j<2*i-1;j++) cout<<i;
11         cout<<i<<endl;
12     }
13     for(i=n-1;i>=1;i--)
14     {
15         for(j=1;j<=n-i;j++) cout<<' ';
16         for(j=1;j<2*i-1;j++) cout<<i;
17         cout<<i<<endl;
18     }
19     return  0;
20 }

p1039

 1 #include<iostream>
 2 #include<iomanip>
 3 #include<cmath>
 4 #include<cstdio>
 5 using namespace std;
 6 int main()
 7 {
 8     int x,y;
 9     cin>>x>>y;
10     for(int i=0;i<=100;i=i+1)
11         for(int j=0;j<=100;j=j+1)
12             for(int k=0;k<=100;k=k+3)
13                 if((i*x+j*y+k*1/3==100)&&(i+j+k==100))
14                     cout<<i<<' '<<j<<' '<<k<<endl;
15     return 0;
16 }

p1040

 1 #include<iostream>
 2 #include<iomanip>
 3 using namespace std;
 4 int main()
 5 {
 6     long long a[100];
 7     int n;
 8     cin>>n;
 9     a[1]=1; a[2]=2;
10     for(int i=3;i<=n;i++)
11         a[i]=a[i-1]+a[i-2];
12     cout<<a[n]<<endl;
13     return 0;
14 }

p1041

 1 #include<iostream>
 2 using namespace std;
 3 int main()
 4 {
 5     long long x,y,l=1,sum=1;
 6     cin>>x>>y;
 7     for(int i=1;i<=y;i++)
 8         l*=10;
 9     for(int i=1;i<=x;i++)
10         sum=sum*2011%l;
11     sum%=l;
12     for(;sum<l/10;l/=10)
13         cout<<'0';
14     cout<<sum<<endl;
15     return 0;
16 }

p1042

 1 #include<iostream>
 2 using namespace std;
 3 int main()
 4 {
 5     int x,y,sum=0;
 6     cin>>x>>y;
 7     for(int  i=x;i<=y;i++)
 8     {
 9         sum=0;
10         for(int k=1;k<=y;k++)
11         if(i%k==0&&k!=i) sum+=k;
12         if(sum==i) cout<<i<<endl;
13     }
14     return 0;
15 }

p1043

 1 #include<iostream>
 2 #include<iomanip>
 3 #include<cmath>
 4 #include<cstdio>
 5 using namespace std;
 6 int main()
 7 {
 8     int a,b,c,flag=0;;
 9     cin>>a>>b>>c;
10     
11     for(int i=10;i<=100;i++)
12     {
13         if((i-a)%3==0&&(i-b)%5==0&&(i-c)%7==0) {cout<<i; flag=i;}
14     }
15     if(flag==0) cout<<"No answer";
16     return 0;
17 }
18