Question

How to remove the middle character from a string in C++

Answer 1

#include <iostream>

void removeCharAt(std::string &s, int pos) {
    s = s.substr(0, pos) + s.substr(pos + 1);
}
 
int main()
{
    std::string s1 = "abcde";
    removeCharAt(s1, s1.length() / 2);
    std::cout << s1 << "\n";
    
    std::string s2 = "abcdef";
    removeCharAt(s2, s2.length() / 2);
    std::cout << s2 << "\n";
}



/*
run:

abde
abcef

*/

 

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Answer 2

#include <iostream>
 
void removeMiddleCharacters(std::string& str) {
    size_t middlePos = str.length() / 2;
    
    str.erase(middlePos - 1, 1); 
}
  
int main()
{
    std::string s1 = "abcde";
    removeMiddleCharacters(s1);
    std::cout << s1 << "\n";
     
    std::string s2 = "abcdef";
    removeMiddleCharacters(s2);
    std::cout << s2 << "\n";
}
 
 
 
/*
run:

acde
abdef

*/

 

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