View Compilation Error

0_0_12159902_30736.cpp: In function `int main()':
0_0_12159902_30736.cpp:4: error: `_int64' undeclared (first use this function)
0_0_12159902_30736.cpp:4: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_12159902_30736.cpp:4: error: expected `;' before "num"
0_0_12159902_30736.cpp:5: error: expected `;' before "temp"
0_0_12159902_30736.cpp:6: error: expected `;' before "j"
0_0_12159902_30736.cpp:13: error: `num' undeclared (first use this function)
0_0_12159902_30736.cpp:13: error: `temp' undeclared (first use this function)
0_0_12159902_30736.cpp:13: error: `k' undeclared (first use this function)
0_0_12159902_30736.cpp:15: error: `j' undeclared (first use this function)