View Compilation Error

0_0_4857112_8238.c: In function `main':
0_0_4857112_8238.c:16: error: syntax error before '&' token
0_0_4857112_8238.c:19: error: `c' undeclared (first use in this function)
0_0_4857112_8238.c:19: error: (Each undeclared identifier is reported only once
0_0_4857112_8238.c:19: error: for each function it appears in.)