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  1. #include<iostream>
  2. #include<cstdlib>
  3. #include<string>
  4. #include<algorithm>
  5. using namespace std;
  6. int main()
  7. {
  8.     string str1="banana";
  9.     cout<<str1.replace(5,1,"e")<<endl;
  10.    
  11.     string str2="banana";
  12.     cout<<str2.replace(str2.find("a"),1,"e")<<endl;
  13.    
  14.     string str3="banana";
  15.     replace(str3.begin(),str3.end(),'a','e');  
  16.     cout<<str3<<endl;
  17.    
  18.     system("pause");     
  19.     return 0;   
  20. }
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