View Compilation Error

0_0_3847704_22787.cpp: In function `int main(int, char**)':
0_0_3847704_22787.cpp:4: error: `_int64' undeclared (first use this function)
0_0_3847704_22787.cpp:4: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_3847704_22787.cpp:4: error: expected `;' before "a"
0_0_3847704_22787.cpp:5: error: expected `;' before "i"
0_0_3847704_22787.cpp:6: error: `a' undeclared (first use this function)
0_0_3847704_22787.cpp:8: error: `i' undeclared (first use this function)
0_0_3847704_22787.cpp:12: error: `scanf' undeclared (first use this function)
0_0_3847704_22787.cpp:12: error: `EOF' undeclared (first use this function)
0_0_3847704_22787.cpp:14: error: `printf' undeclared (first use this function)