Write A function in C++ to print the take input a string and print the sum of index of all its letters. Given: String contains lowercase alphabets only. Index of 'a' is 0 and z is '25. All other...

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Extracted text: Write A function in C++ to print the take input a string and print the sum of index of all its letters. Given: String contains lowercase alphabets only. Index of 'a' is 0 and z is '25. All other alphabets have index same as there position in aplhabets(0 based index).