View Compilation Error

0_0_33339212_32532.cpp: In function 'int main()':
0_0_33339212_32532.cpp:10:5: error: 'intm' was not declared in this scope
     intm=sqrt(20000+100.5);
     ^
0_0_33339212_32532.cpp:12:21: error: 'm' was not declared in this scope
     for(int i=2; i<=m; i++)if(!vis[i])
                     ^