View Compilation Error

0_0_10615562_12637.cpp: In function `int main()':
0_0_10615562_12637.cpp:16: error: `j' undeclared (first use this function)
0_0_10615562_12637.cpp:16: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_10615562_12637.cpp:26: error: expected `}' at end of input