It is very important that the data matches the data type of the variable. If the data does not match the data type then a type mismatch occurs.

If the computer is expecting an integer and gets a floating-point number, the computer will round.

Also, if a variable’s name is a typo and does not match the variable’s name that was made, the computer will make a new variable with incorrect name. This new variable will be initialized as zero (0).

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