View Compilation Error

0_0_7172955_32333.cpp: In function `int main()':
0_0_7172955_32333.cpp:3: error: `__int64' undeclared (first use this function)
0_0_7172955_32333.cpp:3: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_7172955_32333.cpp:3: error: expected `;' before "s"
0_0_7172955_32333.cpp:4: error: expected `;' before "n"
0_0_7172955_32333.cpp:5: error: `n' undeclared (first use this function)
0_0_7172955_32333.cpp:5: error: `scanf' undeclared (first use this function)
0_0_7172955_32333.cpp:5: error: `EOF' undeclared (first use this function)
0_0_7172955_32333.cpp:7: error: `s' undeclared (first use this function)
0_0_7172955_32333.cpp:8: error: `printf' undeclared (first use this function)