View Compilation Error

260140_0_28689.cpp: In function `int main()':
260140_0_28689.cpp:7: error: `j' undeclared (first use this function)
260140_0_28689.cpp:7: error: (Each undeclared identifier is reported only once for each function it appears in.)
260140_0_28689.cpp:17: error: `k' undeclared (first use this function)