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  1. //2_5.cpp
  2. #include<iostream>
  3. using namespace std;
  4. int main(){
  5. int n,m;//分别记录行号和列号
  6. for(n=1;n<=9;n++){
  7.     if(n<=4){
  8.     for(m=1;m<=4-n;m++)
  9.     cout<<" ";
  10.     for(m=1;m<=2*n-1;m++)
  11.     cout<<"*";}
  12.     if(5<=n<=7)
  13.     {for(m=1;m<=3;m++)
  14.     cout<<" ";
  15.     for(m=1;m<2;m++)
  16.     cout<<"*";}
  17.     if(8<=n<=9){
  18.     for(m=1;m<=2;m++)
  19.     cout<<" ";
  20.     for(m=1;m<=3;m++)
  21.     cout<<"*";}
  22.         cout<<endl;
  23. }
  24. return 0;
  25.     }
  26.  
  27.  
  28.  
Success #stdin #stdout 0.01s 5408KB
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stdin
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Standard input is empty
stdout
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   *   *  ***
  ***   *  ***
 *****   *  ***
*******   *  ***
   *  ***
   *  ***
   *  ***
   *  ***
   *  ***
https://ideone.com/XPnpih
language:
C++ (gcc 8.3)
created:
2 years ago
visibility:
public

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