Code H - 7. 2. 8: Part 2, Replace a Letter "Write a function called replace_at_index that take three argument - a tring, an integer (repreenting an index), and a tring. Return a tring that i the ame a the firt tring, except with the character at the pecified index replaced by the econd tring. Ak the uer for ome text, which index to replace, and what to replace that index with (in that order!). Print out the reult of calling your function. If the uer enter the following input: Enter a word or phrae: dog Enter an index value: 0 Enter the new letter: f The following hould be output: fog"
