View Compilation Error

172612_0_13057.c: In function `main':
172612_0_13057.c:7: error: `bool' undeclared (first use in this function)
172612_0_13057.c:7: error: (Each undeclared identifier is reported only once
172612_0_13057.c:7: error: for each function it appears in.)
172612_0_13057.c:7: error: syntax error before "d"
172612_0_13057.c:14: error: `d' undeclared (first use in this function)
172612_0_13057.c:26: error: `false' undeclared (first use in this function)