View Compilation Error

0_0_3335258_23666.cpp: In function `int main()':
0_0_3335258_23666.cpp:15: error: `i' undeclared (first use this function)
0_0_3335258_23666.cpp:15: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_3335258_23666.cpp:17: error: expected `)' before ';' token
0_0_3335258_23666.cpp:17: error: expected `;' before ')' token
0_0_3335258_23666.cpp:21: error: expected `)' before ';' token
0_0_3335258_23666.cpp:21: error: expected `;' before ')' token