View Compilation Error

0_0_2972809_5945.cpp: In function `int main()':
0_0_2972809_5945.cpp:168: error: `cas' undeclared (first use this function)
0_0_2972809_5945.cpp:168: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_2972809_5945.cpp:197: error: `Te' undeclared (first use this function)