View Compilation Error

0_0_20677621_10259.cpp:5:18: error: conflicting declaration 'int m'
 int m[100],n,num,m;
                  ^
0_0_20677621_10259.cpp:5:5: note: previous declaration as 'int m [100]'
 int m[100],n,num,m;
     ^
0_0_20677621_10259.cpp: In function 'int main()':
0_0_20677621_10259.cpp:17:4: error: incompatible types in assignment of 'int' to 'int [100]'
   m=f(n);
    ^