View Compilation Error

0_0_8481245_24742.cpp:3: error: `i' was not declared in this scope
0_0_8481245_24742.cpp:3: error: `j' was not declared in this scope
0_0_8481245_24742.cpp: In function `int main()':
0_0_8481245_24742.cpp:42: error: `aa' undeclared (first use this function)
0_0_8481245_24742.cpp:42: error: (Each undeclared identifier is reported only once for each function it appears in.)