View Compilation Error

0_0_2576931_13496.cpp:2:9: #include expects "FILENAME" or <FILENAME>
0_0_2576931_13496.cpp: In function `int main()':
0_0_2576931_13496.cpp:7: error: `sqrt' undeclared (first use this function)
0_0_2576931_13496.cpp:7: error: (Each undeclared identifier is reported only once for each function it appears in.)