String length in C is the count of characters except null terminator. String is an array of characters terminated by null character
Strings in C# are immutable, creating new objects after each operation. String concatenation involves appending one string to the end of another
Slice function reverses string in one line using [::-1] syntax. Custom function can be created using slice syntax. For loop appends characters backwards to new variable. reversed() function creates reversed iterable object. join() and reversed() can combine reversed string
C strings are arrays of characters with null terminator \0. String.h header file provides functions for string manipulation
.replace() method replaces all occurrences of a character with a new one. Method returns a copy of the string, preserving the original text. Requires two required parameters: old_text and new_text enclosed in quotes
Exercises cover basic arithmetic operations and string manipulation. Programs include summation, division, multiplication, and swapping. Exercises involve user input for operations and calculations