View Compilation Error

0_0_29618577_23143.cpp: In function 'int main()':
0_0_29618577_23143.cpp:62:20: error: cannot convert 'int*' to 'const char*' for argument '1' to 'int kmp(const char*, const char*)'
   cout<<kmp(::a,::b)+1<<endl;
                    ^