Run id: 147084

Main.cc: In function 'int main()':
Main.cc:14:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 for(int i=0;i='A'&&a[i]<='Z' || a[i]>='a'&&a[i]<='z' || a[i]=='_' || a[i]>='0'&&a[i]<='9'))
                   ^
Main.cc:15:80: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
     if(!(a[i]>='A'&&a[i]<='Z' || a[i]>='a'&&a[i]<='z' || a[i]=='_' || a[i]>='0'&&a[i]<='9'))
                                                                                ^
Main.cc: At global scope:
Main.cc:20:1: error: 'cout' does not name a type
 cout<<"yes";
 ^
Main.cc:21:1: error: expected unqualified-id before 'return'
 return 0;
 ^
Main.cc:22:1: error: expected declaration before '}' token
 }
 ^