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 character has been replaced by the '!'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