View Compilation Error

219529_0_9747.cpp: In function `int main()':
219529_0_9747.cpp:4: error: `unsinged' undeclared (first use this function)
219529_0_9747.cpp:4: error: (Each undeclared identifier is reported only once for each function it appears in.)
219529_0_9747.cpp:4: error: expected `;' before "long"
219529_0_9747.cpp:5: error: `n' undeclared (first use this function)
219529_0_9747.cpp:6: error: `a' undeclared (first use this function)
219529_0_9747.cpp:7: error: `i' undeclared (first use this function)