View Compilation Error

0_0_5339511_21930.cpp: In function `void mul(long long int*, int)':
0_0_5339511_21930.cpp:13: error: `tm' undeclared (first use this function)
0_0_5339511_21930.cpp:13: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_5339511_21930.cpp: In function `void div(long long int*, int)':
0_0_5339511_21930.cpp:36: error: `tm' undeclared (first use this function)