CSC 110 Binary to Decimal

Write a program that reads a 4-bit binary number from the keyboard as a string and then converts it into decimal. For example, if the input is 1100, the output should be 12. (Hint: Break the string into substrings and then convert each substring to a value for a single bit. If the bits are b0, b1, b2, and b3, the decimal equivalent is 8b0 + 4b1 + 2b2 + b3.)

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