foo.cc: In function ‘int main()’:
foo.cc:5:22: error: expected initializer before ‘>>’ token
    5 |         int xmin,xmax>>num;
      |                      ^~
foo.cc:6:20: error: ‘xmax’ was not declared in this scope; did you mean ‘fmax’?
    6 |         cin>>xmin>>xmax;
      |                    ^~~~
      |                    fmax
foo.cc:7:9: error: ‘num’ was not declared in this scope; did you mean ‘enum’?
    7 |         num=(xmax-xmin)/1+1;
      |         ^~~
      |         enum
foo.cc:8:33: error: expected primary-expression before ‘,’ token
    8 |         cout<<(xmin+xmax)*num/2<,endl;
      |                                 ^