View Compilation Error

0_0_4819975_1451.c:25: error: syntax error before "cyclic"
0_0_4819975_1451.c: In function `cyclic':
0_0_4819975_1451.c:41: error: `false' undeclared (first use in this function)
0_0_4819975_1451.c:41: error: (Each undeclared identifier is reported only once
0_0_4819975_1451.c:41: error: for each function it appears in.)
0_0_4819975_1451.c:42: error: `true' undeclared (first use in this function)
0_0_4819975_1451.c: In function `solve':
0_0_4819975_1451.c:47: error: 'for' loop initial declaration used outside C99 mode