View Compilation Error

0_0_26234521_17422.cpp: In function 'void findscc(int)':
0_0_26234521_17422.cpp:39:39: error: 'memset' was not declared in this scope
     memset(sccno, 0, sizeof(int)*(n+1));
                                       ^
0_0_26234521_17422.cpp: In function 'int workout(int)':
0_0_26234521_17422.cpp:50:39: error: 'memset' was not declared in this scope
     memset(indeg, 0, sizeof(int)*(n+1));
                                       ^