View Compilation Error

0_0_3152966_13139.cpp:11: error: expected constructor, destructor, or type conversion before '<' token
0_0_3152966_13139.cpp:11: error: expected `,' or `;' before '<' token
0_0_3152966_13139.cpp: In function `int main()':
0_0_3152966_13139.cpp:62: error: `num_sort' undeclared (first use this function)
0_0_3152966_13139.cpp:62: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_3152966_13139.cpp:67: error: `sort' undeclared (first use this function)