53. Getting Started with C++: Erase, replace and Insert Functions(LAST VIDEO)
The C++ string class provides several member functions that can be used to modify the content of a string. Three of these functions are erase(), replace(), and insert(), which are used to remove, replace, and insert characters or substrings in a string.
The erase() function is used to remove characters from a string. It takes two arguments: the position at which to begin erasing characters, and the number of characters to erase. For example, to remove the first three characters from a string s, we can use the statement s.erase(0, 3).
The replace() function is used to replace a portion of a string with another string. It takes three arguments: the position at which to begin replacing characters, the number of characters to replace, and the replacement string. For example, to replace the first three characters of a string s with the string "abc", we can use the statement s.replace(0, 3, "abc").
The insert() function is used to insert a string into another string at a specified position. It takes two arguments: the position at which to insert the string, and the string to be inserted. For example, to insert the string "abc" at the beginning of a string s, we can use the statement s.insert(0, "abc").
These functions are useful for manipulating strings in a variety of ways, and can be combined with other string functions such as substrings, swapping, and finding to perform complex string operations.
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