View Compilation Error

0_0_21563266_22425.cpp: In function 'int main()':
0_0_21563266_22425.cpp:40:14: error: expected initializer before '==' token
   int Sum=0,m==-1;
              ^
0_0_21563266_22425.cpp:46:8: error: 'm' was not declared in this scope
     if(m==-1) m=i;
        ^
0_0_21563266_22425.cpp:50:18: error: 'm' was not declared in this scope
   for(int i=1;i<=m;++i)
                  ^