View Compilation Error

0_0_3042008_139.c:4: error: syntax error before "judge"
0_0_3042008_139.c: In function `judge':
0_0_3042008_139.c:7: error: 'for' loop initial declaration used outside C99 mode
0_0_3042008_139.c:11: error: `false' undeclared (first use in this function)
0_0_3042008_139.c:11: error: (Each undeclared identifier is reported only once
0_0_3042008_139.c:11: error: for each function it appears in.)
0_0_3042008_139.c:13: error: `true' undeclared (first use in this function)
0_0_3042008_139.c: At top level:
0_0_3042008_139.c:15: error: syntax error before "Union"
0_0_3042008_139.c: In function `Union':
0_0_3042008_139.c:18: error: `false' undeclared (first use in this function)
0_0_3042008_139.c:21: error: `true' undeclared (first use in this function)