Why sizeof('\n') and sizeof(char) not equal?

Question

I've tested sizeof('\n') is 4, but if when it is assigned to a char variable, then it occupies 1 byte of memory.

char enter = '\n';
sizeof(enter); // 1

What are their sizes different?

Answer 1

The type of '\n' is int, therefore sizeof('\n') equals sizeof(int); on the other hand, sizeof(char) always equals 1.