View Compilation Error

0_0_11188718_24037.cpp: In function `int main()':
0_0_11188718_24037.cpp:36: error: `i' undeclared (first use this function)
0_0_11188718_24037.cpp:36: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_11188718_24037.cpp:37: error: `t' undeclared (first use this function)