View Compilation Error

0_0_11580990_18489.cpp: In function `int Dijsktra()':
0_0_11580990_18489.cpp:144: error: `memset' undeclared (first use this function)
0_0_11580990_18489.cpp:144: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_11580990_18489.cpp: In function `int main()':
0_0_11580990_18489.cpp:183: error: `memset' undeclared (first use this function)