View Compilation Error

0_0_2908711_24720.c: In function `cmp':
0_0_2908711_24720.c:12: error: `h' undeclared (first use in this function)
0_0_2908711_24720.c:12: error: (Each undeclared identifier is reported only once
0_0_2908711_24720.c:12: error: for each function it appears in.)
0_0_2908711_24720.c:12: error: syntax error before ')' token
0_0_2908711_24720.c:13: error: syntax error before ')' token