View Compilation Error

0_0_6702294_21977.cpp: In function `int f(int)':
0_0_6702294_21977.cpp:15: error: `get' undeclared (first use this function)
0_0_6702294_21977.cpp:15: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_6702294_21977.cpp: In function `int getsum(int)':
0_0_6702294_21977.cpp:40: error: `get' undeclared (first use this function)
0_0_6702294_21977.cpp: In function `int main()':
0_0_6702294_21977.cpp:50: error: `t' undeclared (first use this function)