View Compilation Error

0_0_3291901_16020.c: In function `check_num':
0_0_3291901_16020.c:21: error: syntax error before '/' token
0_0_3291901_16020.c: In function `check_ip':
0_0_3291901_16020.c:32: error: syntax error before '/' token
0_0_3291901_16020.c:36: error: syntax error before '/' token
0_0_3291901_16020.c:45: error: syntax error before '/' token
0_0_3291901_16020.c:50: error: syntax error before '/' token