View Compilation Error

0_0_12675864_363.cpp: In function `int main()':
0_0_12675864_363.cpp:19: error: `k' undeclared (first use this function)
0_0_12675864_363.cpp:19: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_12675864_363.cpp:20: error: expected `;' before "for"
0_0_12675864_363.cpp:20: error: `j' undeclared (first use this function)
0_0_12675864_363.cpp:20: error: expected `;' before ')' token
0_0_12675864_363.cpp:36: error: expected `}' at end of input