View Compilation Error

210820_0_2355.c:8: error: syntax error before "city"
210820_0_2355.c: In function `cmp':
210820_0_2355.c:13: error: `node' undeclared (first use in this function)
210820_0_2355.c:13: error: (Each undeclared identifier is reported only once
210820_0_2355.c:13: error: for each function it appears in.)
210820_0_2355.c:13: error: syntax error before ')' token
210820_0_2355.c:13: error: syntax error before ')' token
210820_0_2355.c: In function `main':
210820_0_2355.c:29: error: request for member `p' in something not a structure or union
210820_0_2355.c:29: error: request for member `r' in something not a structure or union
210820_0_2355.c:34: error: request for member `r' in something not a structure or union
210820_0_2355.c:34: error: request for member `r' in something not a structure or union