View Compilation Error

0_0_13384092_28098.c: In function 'comp':
0_0_13384092_28098.c:20:23: error: 'input' undeclared (first use in this function)
0_0_13384092_28098.c:20:23: note: each undeclared identifier is reported only once for each function it appears in
0_0_13384092_28098.c:20:29: error: expected expression before ')' token
0_0_13384092_28098.c:21:30: error: expected expression before ')' token
0_0_13384092_28098.c: In function 'main':
0_0_13384092_28098.c:203:12: error: 'true' undeclared (first use in this function)