View Compilation Error

0_0_29441546_22199.cpp: In function 'int main()':
0_0_29441546_22199.cpp:9:5: error: expected ',' or ';' before 'for'
     for (int i = m; i <= n; i++) 
     ^
0_0_29441546_22199.cpp:9:21: error: 'i' was not declared in this scope
     for (int i = m; i <= n; i++) 
                     ^
0_0_29441546_22199.cpp:12:9: error: 'else' without a previous 'if'
       } else {
         ^