Why is it sometimes advantageous to use sscanf to read a string instead of using scanf to read standard input? Explain why the strcmp function may return one of three values. Explain why the standard...

Why is it sometimes advantageous to use sscanf to read a string instead of using scanf to

read standard input?

Explain why the strcmp function may return one of three values.

Explain why the standard technique of passing pointers to a function doesn’t work when

swapping two strings.