View Compilation Error

0_0_11215579_3681.cpp: In function `int KMP(char*, const char*)':
0_0_11215579_3681.cpp:30: error: invalid conversion from `const char*' to `char*'
0_0_11215579_3681.cpp:30: error:   initializing argument 1 of `void setNext(char*)'
0_0_11215579_3681.cpp: In function `int main()':
0_0_11215579_3681.cpp:54: error: ISO C++ forbids comparison between pointer and integer