The characteristics of C that make it less safe than Pascal:

C was insecure compared to Pascal due its lack of complete type checking and management of pointers.

Pascal has a better ability to detect type-related errors at compile time, whereas C allows more flexible handling of mixed data-types when required.

A language is strongly typed if:

(1) Every object in the language belongs to exactly one type.

(2) Type conversion occurs by converting a value from one type to another.

Conversion does not occur by viewing the representation of a value as a different type.

Although C is a typed language, it is not strongly typed whereas Pascal comes close to a strongly typed language.

For example in C, functions can be written and parameters types were not all checked until C version C99...

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