View Compilation Error

213740_0_29869.c:4: error: syntax error before "is_prime"
213740_0_29869.c: In function `is_prime':
213740_0_29869.c:6: error: `false' undeclared (first use in this function)
213740_0_29869.c:6: error: (Each undeclared identifier is reported only once
213740_0_29869.c:6: error: for each function it appears in.)
213740_0_29869.c:7: error: `true' undeclared (first use in this function)
213740_0_29869.c:9: error: 'for' loop initial declaration used outside C99 mode
213740_0_29869.c: In function `main':
213740_0_29869.c:25: error: 'for' loop initial declaration used outside C99 mode