运行 ID: 77822

Main.cc: In function ‘int main()’:
Main.cc:8:29: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses]
   if(f=='-'&&af>be&&(be>='0'&&af<='9'||be>='a'&&af<='z')){
                      ~~~~~~~^~~~~~~~~
Main.cc:18:3: warning: this ‘else’ clause does not guard... [-Wmisleading-indentation]
   else
   ^~~~
Main.cc:20:4: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘else’
    i++;
    ^
Main.cc: At global scope:
Main.cc:22:2: error: expected unqualified-id before ‘return’
  return 0;
  ^~~~~~
Main.cc:23:1: error: expected declaration before ‘}’ token
 }
 ^
Main.cc: In function ‘int main()’:
Main.cc:6:7: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d%s",&p1,&p2,&p3,ch);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~