View Compilation Error

839176_0_0_8932.c:5: error: syntax error before "f"
839176_0_0_8932.c: In function `f':
839176_0_0_8932.c:7: error: `true' undeclared (first use in this function)
839176_0_0_8932.c:7: error: (Each undeclared identifier is reported only once
839176_0_0_8932.c:7: error: for each function it appears in.)
839176_0_0_8932.c:20: error: `false' undeclared (first use in this function)