View Compilation Error

0_0_12682193_4710.cpp: In function `int main()':
0_0_12682193_4710.cpp:14: error: `memset' undeclared (first use this function)
0_0_12682193_4710.cpp:14: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_12682193_4710.cpp:16: error: `strlen' undeclared (first use this function)
0_0_12682193_4710.cpp:25: error: name lookup of `i' changed for new ISO `for' scoping
0_0_12682193_4710.cpp:16: error:   using obsolete binding at `i'