View Compilation Error

0_0_12217710_30870.c:3: error: syntax error before "prime"
0_0_12217710_30870.c: In function `prime':
0_0_12217710_30870.c:10: error: `true' undeclared (first use in this function)
0_0_12217710_30870.c:10: error: (Each undeclared identifier is reported only once
0_0_12217710_30870.c:10: error: for each function it appears in.)
0_0_12217710_30870.c:12: error: `false' undeclared (first use in this function)