')' 标记前的预期主表达式错误

Question

14:15: error: expected primary-expression before ')' token and 18:20: error: expected primary-expression before ')' token

here's my code

#include <iostream>
#include <string>
using namespace std;

int main () 
{
   // local variable declaration:
   int a;
   cout<<"masukkan operasi = "; cin >> a;
   int angka1;
   cout<<"masukkan angka = ";cin >> angka1;
   int angka2;
   cout<<"masukkan angka = ";cin >> angka2;
   if( a == + ) 
   {
      cout <<"Hasil = " << angka1+angka2 <<endl ; //hasil
   } 
   else if( a == * ) 
   {
       cout <<"Hasil = " << angka1*angka2 <<endl ;
   }
}

pls help me, i'm new to c++

Answer 1

if( a == + )

In the above line a is an integer, but you are trying to read + or * which are charecters. So first change the line int a; to char a; . Next change the line if( a == + ) to if( a == '+') . Similarly do it for else case.