View Compilation Error

0_0_37382470_446.cpp: In function 'int main()':
0_0_37382470_446.cpp:19:32: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
                 if(&& i - 1 >= 1 && s[i-1] == '0') s[i] = '*';
                                ^
0_0_37382470_446.cpp:19:23: error: label 'i' used but not defined
                 if(&& i - 1 >= 1 && s[i-1] == '0') s[i] = '*';
                       ^