C++ String back()This function is used to access the last character of string. SyntaxConsider a string s. Syntax would be: ParameterThis function does not contain any parameter. Return valueThis function returns the reference of last character of the string. ExampleLet's see the simple example to add a mew character at the end of the string Output: BTech in computer science In this example, '.' character has been replaced by the '!' character by using back function.
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