How to Replace Character at Specific Index in String in C++ - Step by Step Examples

How to Replace Character at Specific Index in String in C++ ?

Answer

To replace a character at a specific index in a string in C++, you can directly access the character array representation of the string and modify the character at the desired index.

✐ Examples

1 Replace character at specific index in a string

In this example,

We create a string named str.
We access the character array representation of the string using str.data().
We replace the character at index index with the character newChar.
Finally, we print the modified string str.

C++ Program

#include <iostream>
#include <string>

int main() {
    std::string str = "Hello World";
    int index = 6;
    char newChar = 'x';
    char* charArray = &str[0];
    charArray[index] = newChar;
    std::cout << str << std::endl;
    return 0;
}

Output

Hello xorld

Summary

In this tutorial, we learned How to Replace Character at Specific Index in String in C++ language with well detailed examples.

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