View Compilation Error

0_0_32001680_6744.cpp: In function 'int main()':
0_0_32001680_6744.cpp:8:21: error: 'i' was not declared in this scope
                for( i=0;i<n;i++)
                     ^
0_0_32001680_6744.cpp:10:25: error: 'j' was not declared in this scope
                    for( j=0;j<m;j++)
                         ^