View Compilation Error

80978_0_26357.c: In function `main':
80978_0_26357.c:5: error: `bool' undeclared (first use in this function)
80978_0_26357.c:5: error: (Each undeclared identifier is reported only once
80978_0_26357.c:5: error: for each function it appears in.)
80978_0_26357.c:5: error: syntax error before "Found"
80978_0_26357.c:14: error: `Found' undeclared (first use in this function)
80978_0_26357.c:14: error: `false' undeclared (first use in this function)
80978_0_26357.c:44: error: `true' undeclared (first use in this function)