c++作业-6

#include<iostream.h>  void main()  {      const int n=50;      char s[n];      int i,k=0;      cout<<"请输入字符串，E键结束,并按enter键继续";      for(i=0;i<n;i++)      {          cin>>s[i];          k++;          if(s[i]=='E')              break;      }      cout<<"请输入要删的一个字符";      char c;      cin>>c;      for(i=0;i<k-1;i++)      {          if(*(s+i)==c)              continue;          else              cout<<*(s+i);      }      cout<<endl;  } 

<pre name="code" class="cpp">#include<iostream>  using namespace std;  int main()  {      int a[3][3],i,j,sum1=0,sum2=0,sum=0;      cout<<"请输入该三阶矩阵："<<endl;      for(i=0;i<3;i++)      {          for(j=0;j<3;j++)              cin>>a[i][j];      }      for(i=0;i<3;i++)      {          sum1+=a[i][i];          sum2+=a[i][2-i];          sum=sum1+sum2;      }      cout<<"对角线1的和为"<<sum1<<"，对角线2的和为"<<sum2<<endl;      cout<<"其和为"<<sum<<endl;      return 0;  }