View Compilation Error

0_0_36087748_2326.cpp: In function 'bool cmp(student, student)':
0_0_36087748_2326.cpp:20:40: error: 'strcmp' was not declared in this scope
             return(strcmp(a.name,b.name)<0);
                                        ^
0_0_36087748_2326.cpp: In function 'int main()':
0_0_36087748_2326.cpp:37:40: error: 'strcmp' was not declared in this scope
             if(strcmp(stu[t].name,"eof")==0)
                                        ^