View Compilation Error

300803_0_1012.cpp:3: error: `_TCHAR' has not been declared
300803_0_1012.cpp:4: error: ISO C++ forbids declaration of `argv' with no type
300803_0_1012.cpp: In function `int _tmain(int, int**)':
300803_0_1012.cpp:7: error: `scanf' undeclared (first use this function)
300803_0_1012.cpp:7: error: (Each undeclared identifier is reported only once for each function it appears in.)
300803_0_1012.cpp:7: error: `EOF' undeclared (first use this function)
300803_0_1012.cpp:10: error: `getchar' undeclared (first use this function)
300803_0_1012.cpp:30: error: `printf' undeclared (first use this function)