foo.cc: In function 'void solve(char*, char*)':
foo.cc:7:28: warning: 'sizeof' on array function parameter 's' will return size of 'char*' [-Wsizeof-array-argument]
     for (int i=0;i<sizeof(s);i++){
                            ^
foo.cc:4:19: note: declared here
 void solve(char s[],char ans[]){
                   ^
foo.cc:7:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i=0;i<sizeof(s);i++){
                  ~^~~~~~~~
foo.cc:22:1: error: a function-definition is not allowed here before '{' token
 {
 ^
foo.cc:28:1: error: expected '}' at end of input
 }
 ^

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