View Compilation Error

0_0_10014541_19098.c:3: error: syntax error before "v"
0_0_10014541_19098.c:8: error: syntax error before "vis"
0_0_10014541_19098.c: In function `vis':
0_0_10014541_19098.c:10: error: `bool' undeclared (first use in this function)
0_0_10014541_19098.c:10: error: (Each undeclared identifier is reported only once
0_0_10014541_19098.c:10: error: for each function it appears in.)
0_0_10014541_19098.c:10: error: syntax error before "bl"
0_0_10014541_19098.c:13: error: `true' undeclared (first use in this function)
0_0_10014541_19098.c:19: error: `bl' undeclared (first use in this function)
0_0_10014541_19098.c:20: error: `false' undeclared (first use in this function)
0_0_10014541_19098.c: In function `main':
0_0_10014541_19098.c:39: error: `true' undeclared (first use in this function)
0_0_10014541_19098.c:52: error: `false' undeclared (first use in this function)