View Compilation Error

0_0_33678266_18040.cpp: In function 'int main()':
0_0_33678266_18040.cpp:24:25: error: cannot convert 'std::string {aka std::basic_string<char>}' to 'const char*' for argument '1' to 'int strcmp(const char*, const char*)'
    if(strcmp(s[i],s[i-1])!=0)
                         ^