View Compilation Error

0_0_5105284_7133.cpp: In function `int main()':
0_0_5105284_7133.cpp:5: error: `_int' undeclared (first use this function)
0_0_5105284_7133.cpp:5: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_5105284_7133.cpp:5: error: expected `;' before "i"
0_0_5105284_7133.cpp:7: error: `a' undeclared (first use this function)
0_0_5105284_7133.cpp:11: error: `i' undeclared (first use this function)
0_0_5105284_7133.cpp:15: error: `n' undeclared (first use this function)