View Compilation Error

129394_0_12316.cpp: In function `int main()':
129394_0_12316.cpp:9: error: `i' undeclared (first use this function)
129394_0_12316.cpp:9: error: (Each undeclared identifier is reported only once for each function it appears in.)
129394_0_12316.cpp:12: error: `A' undeclared (first use this function)