View Compilation Error

0_0_24085055_22991.cpp: In function 'int main()':
0_0_24085055_22991.cpp:17:7: error: 'i' was not declared in this scope
   for(i = 0; i < m; i++)
       ^
0_0_24085055_22991.cpp:24:7: error: 'i' was not declared in this scope
   for(i = 0; i < n-1; i++)
       ^