C++ :
#include<bits/stdc++.h> using namespace std; int main() { char a; //定义字符变量 a cin>>a; //输入给定1个字符 cout<<" "<<a<<endl; //输入一个字符,先输出2个空格 cout<<" "<<a<<a<<a<<endl; //输出3个字符,先输出1个空格 cout<<a<<a<<a<<a<<a<<endl; //输出5个字符 return 0; }
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