View Compilation Error

0_0_33629240_30424.cpp:26:36: error: empty character constant
                 if(a[i]=='0') a[i]='';
                                    ^
0_0_33629240_30424.cpp:29:32: error: empty character constant
             {a[l1]='.';a[l1+1]='';l1++;}
                                ^
0_0_33629240_30424.cpp:33:36: error: empty character constant
                 if(b[i]=='0') b[i]='';
                                    ^
0_0_33629240_30424.cpp:36:32: error: empty character constant
             {b[l2]='.';b[l2+1]='';l2++;}
                                ^