View Compilation Error

0_0_32250935_6835.cpp: In function 'bool cmp(const Student&, const Student&)':
0_0_32250935_6835.cpp:21:38: error: 'strcmp' was not declared in this scope
         return (strcmp(a.name, b.name) < 0);
                                      ^
0_0_32250935_6835.cpp: In function 'int main()':
0_0_32250935_6835.cpp:27:33: error: 'memset' was not declared in this scope
     memset(data, 0, sizeof(data));
                                 ^