View Compilation Error

55008_0_5878.cpp: In function `int main()':
55008_0_5878.cpp:6: error: `_int64' undeclared (first use this function)
55008_0_5878.cpp:6: error: (Each undeclared identifier is reported only once for each function it appears in.)
55008_0_5878.cpp:6: error: expected `;' before "m1"
55008_0_5878.cpp:13: error: `m1' undeclared (first use this function)
55008_0_5878.cpp:13: error: expected `)' before "n"