View Compilation Error

0_0_12643927_10240.cpp: In function `int main()':
0_0_12643927_10240.cpp:133: error: `n' undeclared (first use this function)
0_0_12643927_10240.cpp:133: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_12643927_10240.cpp:152: error: name lookup of `j' changed for new ISO `for' scoping
0_0_12643927_10240.cpp:134: error:   using obsolete binding at `j'
0_0_12643927_10240.cpp:160: error: name lookup of `k' changed for new ISO `for' scoping
0_0_12643927_10240.cpp:148: error:   using obsolete binding at `k'