View Compilation Error

0_0_6411367_23670.c:5: error: syntax error before "check"
0_0_6411367_23670.c: In function `check':
0_0_6411367_23670.c:8: error: `false' undeclared (first use in this function)
0_0_6411367_23670.c:8: error: (Each undeclared identifier is reported only once
0_0_6411367_23670.c:8: error: for each function it appears in.)
0_0_6411367_23670.c:11: error: `true' undeclared (first use in this function)