View Compilation Error

0_0_2719772_15717.c:4: error: syntax error before "rank"
0_0_2719772_15717.c: In function `main':
0_0_2719772_15717.c:30: error: `false' undeclared (first use in this function)
0_0_2719772_15717.c:30: error: (Each undeclared identifier is reported only once
0_0_2719772_15717.c:30: error: for each function it appears in.)