View Compilation Error

0_0_7150576_23214.cpp: In function `bool check()':
0_0_7150576_23214.cpp:12: error: `labs' undeclared (first use this function)
0_0_7150576_23214.cpp:12: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_7150576_23214.cpp: In function `int main()':
0_0_7150576_23214.cpp:37: error: `memset' undeclared (first use this function)