Check out example codes for "c c_str". It will help you in understanding the concepts better.
Code Example 1
Get C string equivalent TL;DR -> Makes the string end with '\0' Returns a pointer to an array that contains a null-terminated sequence of characters (i.e., a C-string) representing the current value of the string object. This array includes the same sequence of characters that make up the value of the string object plus an additional terminating null-character ('\0') at the end.
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