View Compilation Error

0_0_4740583_31576.cpp: In function `bool is_same(node*, node*)':
0_0_4740583_31576.cpp:47: error: `returntrue' undeclared (first use this function)
0_0_4740583_31576.cpp:47: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_4740583_31576.cpp:49: error: `returnfalse' undeclared (first use this function)
0_0_4740583_31576.cpp: In function `int main()':
0_0_4740583_31576.cpp:95: error: `return0' undeclared (first use this function)