View Compilation Error

0_0_15779536_10156.cpp: In function 'int main()':
0_0_15779536_10156.cpp:42:34: error: 'strcmp' was not declared in this scope
   if (strcmp(a[i][k].sex,"female")==0)
                                  ^
0_0_15779536_10156.cpp:48:34: error: 'strcmp' was not declared in this scope
   if (strcmp(a[i][k].sex,"female")==0)
                                  ^