0_0_11507782_18745.cpp:33: error: expected constructor, destructor, or type conversion before '<' token
0_0_11507782_18745.cpp:33: error: expected `,' or `;' before '<' token
0_0_11507782_18745.cpp: In function `void make_factor()':
0_0_11507782_18745.cpp:51: error: `factors' undeclared (first use this function)
0_0_11507782_18745.cpp:51: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_11507782_18745.cpp: In function `void calc_b()':
0_0_11507782_18745.cpp:72: error: `factors' undeclared (first use this function)
0_0_11507782_18745.cpp:72: error: invalid type in declaration before '=' token
0_0_11507782_18745.cpp:74: error: invalid type argument of `unary *'
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