View Compilation Error

0_0_30075097_19637.cpp: In function 'bool dfs(int, int, int)':
0_0_30075097_19637.cpp:25:11: error: expected initializer before '==' token
     int sh==0;
           ^
0_0_30075097_19637.cpp:29:13: error: 'sh' was not declared in this scope
             sh++;    
             ^
0_0_30075097_19637.cpp:31:8: error: 'sh' was not declared in this scope
     if(sh==0)
        ^