View Compilation Error

298233_0_28892.cpp:3:18: stdlib: No such file or directory
298233_0_28892.cpp: In function `int turn(char*)':
298233_0_28892.cpp:15: error: `itoa' undeclared (first use this function)
298233_0_28892.cpp:15: error: (Each undeclared identifier is reported only once for each function it appears in.)
298233_0_28892.cpp: In function `int main()':
298233_0_28892.cpp:26: error: `itoa' undeclared (first use this function)