View Compilation Error

521159_0_0_15835.c:6: error: syntax error before "isPrimer"
521159_0_0_15835.c: In function `main':
521159_0_0_15835.c:16: error: syntax error before ':' token
521159_0_0_15835.c: At top level:
521159_0_0_15835.c:57: error: syntax error before "isPrimer"
521159_0_0_15835.c: In function `isPrimer':
521159_0_0_15835.c:62: error: `false' undeclared (first use in this function)
521159_0_0_15835.c:62: error: (Each undeclared identifier is reported only once
521159_0_0_15835.c:62: error: for each function it appears in.)
521159_0_0_15835.c:63: error: `true' undeclared (first use in this function)