View Compilation Error

0_0_29366246_21049.cpp: In function 'bool cmp(Student, Student)':
0_0_29366246_21049.cpp:15:29: error: 'strcmp' was not declared in this scope
  return strcmp(a.name,b.name) > 0 ? 0 : 1;    //如果分数相同按学号排序 
                             ^