View Compilation Error

0_0_38359961_18995.cpp: In function 'int main()':
0_0_38359961_18995.cpp:19:29: error: 'strstr' was not declared in this scope
    if (strstr(color[i], str2))
                             ^
0_0_38359961_18995.cpp:25:27: error: cast from 'char (*)[15]' to 'int' loses precision [-fpermissive]
   int pp = ((int)p - (int)color) / 15;
                           ^