View Compilation Error

0_0_12969412_29526.cpp:1:10: #include expects "FILENAME" or <FILENAME>
0_0_12969412_29526.cpp:2:10: #include expects "FILENAME" or <FILENAME>
0_0_12969412_29526.cpp: In function `int main()':
0_0_12969412_29526.cpp:16: error: `scanf' undeclared (first use this function)
0_0_12969412_29526.cpp:16: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_12969412_29526.cpp:16: error: `EOF' undeclared (first use this function)
0_0_12969412_29526.cpp:19: error: `sqrt' undeclared (first use this function)
0_0_12969412_29526.cpp:29: error: `printf' undeclared (first use this function)