运行 ID: 129543

Main.cc: In function ‘int main()’:
Main.cc:10:11: error: a function-definition is not allowed here before ‘{’ token
 int main(){
           ^
Main.cc:4:5: warning: unused variable ‘k’ [-Wunused-variable]
 int k;
     ^
Main.cc:6:5: warning: unused variable ‘n’ [-Wunused-variable]
 int n = 0;
     ^
Main.cc:8:8: warning: unused variable ‘s’ [-Wunused-variable]
 double s = 0;
        ^
Main.cc:26:1: error: expected ‘}’ at end of input
 }
 ^