第六周作业

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习题一

#include<iostream>#include<iomanip>using namespace std;int main(){    int i,j,t;int str[5];cout<<"请输入五个数:"<<endl;for(i=0;i<5;i++)cin>>str[i];    cout<<"这五个数的从小到大的顺序是:"<<endl;for(i=0;i<4;i++)for(j=0;j<4-i;j++)if(str[j]>str[j+1]){t=str[j];str[j]=str[j+1];str[j+1]=t;}for(i=0;i<5;i++)cout<<str[i]<<setw(4);    cout<<endl; return 0;}

习题二

#include<iostream>#include<iomanip>using namespace std;int main(){    int a[2][3];int i,j,big;cout<<"请输入二行三列二维数组的元素值:"<<endl;      for(i=0;i<2;i++)    for(j=0;j<3;j++)    {         cout<<"a["<<i<<"]"<<"["<<j<<"]=";        cin>>a[i][j];}cout<<"该二维数组为:";    for(i=0;i<2;i++)    for(j=0;j<3;j++){   if(j%3==0)cout<<endl;cout<<setw(4)<<a[i][j];}cout<<endl;big=a[0][0];    for(i=0;i<2;i++)    for(j=0;j<3;j++)if(a[i][j]>=big)big=a[i][j];    for(i=0;i<2;i++)    for(j=0;j<3;j++)    if(a[i][j]==big)cout<<"该数组中最大元素为:"<<"a["<<i<<"]"<<"["<<j<<"]="<<a[i][j]<<endl;}

习题三

#include<iostream>using namespace std;int function(int n);int main(){    int i,count;count=0;    for(i=1;i<=20;i++){cout<<function(i)<<" ";        cout<<endl;if(function(i)>=100&&function(i)<=999)count++;    } cout<<"Fibonacci数列前20个数中的三位数个数为:"<<count<<endl; cout<<"该数列第16项数据是:"<<function(16)<<endl;     return 0;    }int function(int n){   if(n==1||n==2)return 1;   else return function(n-1)+function(n-2);}

习题四

#include<iostream>#include<iomanip>using namespace std;int main(){char a[100];int i,xiaoxue=0,shuzi=0,daxue=0,kongge=0,qita=0;cout<<"请输入一行字符小于100的文字:";    cin.get(a,100);    for(i=0;i<100;i++)    { if(a[i]>='a'&&a[i]<='z')     xiaoxue++;     else if     (a[i]>='0'&&a[i]<='9')   //因为a被定义为char,,所以应该写成'0' '9'     shuzi++;     else if     (a[i]>='A'&&a[i]<='Z')     daxue++;     else if     (a[i]==' ')     kongge++;     else if (a[i]=='\0') qita=strlen(a)-(shuzi+xiaoxue+daxue+kongge);}     cout<<"数字个数为:"<<shuzi<<endl;     cout<<"小写字母个数为:"<<xiaoxue<<endl;     cout<<"大写字母个数为:"<<daxue<<endl;     cout<<"空格个数为:"<<kongge<<endl;     cout<<"其他字符个数为:"<<qita<<endl;     return 0;}

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