View Compilation Error

0_0_2110888_27881.c:4: error: syntax error before '/' token
0_0_2110888_27881.c: In function `main':
0_0_2110888_27881.c:11: error: `n' undeclared (first use in this function)
0_0_2110888_27881.c:11: error: (Each undeclared identifier is reported only once
0_0_2110888_27881.c:11: error: for each function it appears in.)