View Compilation Error

0_0_4154792_30715.c:2:18: string: No such file or directory
0_0_4154792_30715.c: In function `main':
0_0_4154792_30715.c:6: error: `bool' undeclared (first use in this function)
0_0_4154792_30715.c:6: error: (Each undeclared identifier is reported only once
0_0_4154792_30715.c:6: error: for each function it appears in.)
0_0_4154792_30715.c:6: error: syntax error before "ph"
0_0_4154792_30715.c:12: error: `ph' undeclared (first use in this function)
0_0_4154792_30715.c:12: error: `true' undeclared (first use in this function)
0_0_4154792_30715.c:14: error: `false' undeclared (first use in this function)