View Compilation Error

0_0_1469109_11709.cpp: In function `int h(int)':
0_0_1469109_11709.cpp:7: error: `itoa' undeclared (first use this function)
0_0_1469109_11709.cpp:7: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_1469109_11709.cpp:8: error: `strlen' undeclared (first use this function)