View Compilation Error

204450_0_15346.cpp:1:9: #include expects "FILENAME" or <FILENAME>
204450_0_15346.cpp:2:9: #include expects "FILENAME" or <FILENAME>
204450_0_15346.cpp: In function `int main()':
204450_0_15346.cpp:6: error: `scanf' undeclared (first use this function)
204450_0_15346.cpp:6: error: (Each undeclared identifier is reported only once for each function it appears in.)
204450_0_15346.cpp:7: error: `sqrt' undeclared (first use this function)
204450_0_15346.cpp:8: error: `printf' undeclared (first use this function)
204450_0_15346.cpp:9: error: `reture' undeclared (first use this function)
204450_0_15346.cpp:9: error: expected `;' before numeric constant