/in/foo.cc: In function 'int main()':
/in/foo.cc:14:16: warning: comparison with string literal results in unspecified behavior [-Waddress]
    if(a[i][j]=="*")b[i][j]=-1;
                ^~~
/in/foo.cc:14:16: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]