View Compilation Error

521164_0_0_24652.c:5: error: syntax error before "isPrimer"
521164_0_0_24652.c: In function `main':
521164_0_0_24652.c:15: error: syntax error before ':' token
521164_0_0_24652.c: At top level:
521164_0_0_24652.c:56: error: syntax error before "isPrimer"
521164_0_0_24652.c: In function `isPrimer':
521164_0_0_24652.c:61: error: `false' undeclared (first use in this function)
521164_0_0_24652.c:61: error: (Each undeclared identifier is reported only once
521164_0_0_24652.c:61: error: for each function it appears in.)
521164_0_0_24652.c:62: error: `true' undeclared (first use in this function)