View Compilation Error

0_0_35506939_22677.cpp: In function 'int main()':
0_0_35506939_22677.cpp:11:13: error: request for member 'begin' in 'str', which is of non-class type 'char [100]'
 reverse(str.begin(),str.end());
             ^
0_0_35506939_22677.cpp:11:25: error: request for member 'end' in 'str', which is of non-class type 'char [100]'
 reverse(str.begin(),str.end());
                         ^