View Compilation Error

0_0_20912064_14065.cpp: In function 'int main()':
0_0_20912064_14065.cpp:33:13: error: 'i' was not declared in this scope
         for(i = 0; i<l; i++)  
             ^
0_0_20912064_14065.cpp:35:17: error: 'j' was not declared in this scope
             for(j = 0; j<n; j++)  
                 ^
0_0_20912064_14065.cpp:52:17: error: 'i' was not declared in this scope
             for(i = 0;i<m;i++)  
                 ^