Question: A message containing letters from A-Z is being encoded to numbers using the following mapping: 'A' -> 1 'B' -> 2 ... 'Z' -> 26

A message containing letters from A-Z is being encoded to numbers using the following mapping:

'A' -> 1 'B' -> 2 ... 'Z' -> 26 Given an encoded message containing digits, write a C program that determines the total number of ways to decode it. For example, given encoded message "12", it could be decoded as "AB" (1 2) or "L" (12). The number of ways decoding "12" is 2. Test Cases: Input: 321 Output: 2 Input: 2213 Output: 5 Input: 7789 Output: 1

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