View Compilation Error

0_0_10180929_1731.cpp:1:10: #include expects "FILENAME" or <FILENAME>
0_0_10180929_1731.cpp:2:10: #include expects "FILENAME" or <FILENAME>
0_0_10180929_1731.cpp:3:10: #include expects "FILENAME" or <FILENAME>
0_0_10180929_1731.cpp:4:10: #include expects "FILENAME" or <FILENAME>
0_0_10180929_1731.cpp: In function `int main()':
0_0_10180929_1731.cpp:51: error: `scanf' undeclared (first use this function)
0_0_10180929_1731.cpp:51: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_10180929_1731.cpp:70: error: `printf' undeclared (first use this function)