View Compilation Error

0_0_4906088_27996.cpp: In function `int main()':
0_0_4906088_27996.cpp:14: error: expected `,' or `;' before "s1"
0_0_4906088_27996.cpp:19: error: `num' undeclared (first use this function)
0_0_4906088_27996.cpp:19: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_4906088_27996.cpp:33: error: `s1' undeclared (first use this function)
0_0_4906088_27996.cpp:38: error: `t1' undeclared (first use this function)
0_0_4906088_27996.cpp:41: error: `t2' undeclared (first use this function)
0_0_4906088_27996.cpp:44: error: `s2' undeclared (first use this function)