View Compilation Error

0_0_7588382_892.cpp:2:19: string,h: No such file or directory
0_0_7588382_892.cpp: In function `int main()':
0_0_7588382_892.cpp:23: error: `strrev' undeclared (first use this function)
0_0_7588382_892.cpp:23: error: (Each undeclared identifier is reported only once for each function it appears in.)