View Compilation Error

0_0_1488179_21944.c: In function `main':
0_0_1488179_21944.c:10: error: `bool' undeclared (first use in this function)
0_0_1488179_21944.c:10: error: (Each undeclared identifier is reported only once
0_0_1488179_21944.c:10: error: for each function it appears in.)
0_0_1488179_21944.c:10: error: syntax error before "mark"
0_0_1488179_21944.c:33: error: `mark' undeclared (first use in this function)
0_0_1488179_21944.c:33: error: `false' undeclared (first use in this function)
0_0_1488179_21944.c:37: error: `true' undeclared (first use in this function)