Question

I am getting this error during compile time (g++ 4.4.6):

main.cpp: In function ‘int main()’:
main.cpp:27: error: expected initializer before ‘:’ token
main.cpp:33: error: expected primary-expression before ‘for’
main.cpp:33: error: expected ‘;’ before ‘for’
main.cpp:33: error: expected primary-expression before ‘for’
main.cpp:33: error: expected ‘)’ before ‘for’
main.cpp:33: error: expected initializer before ‘:’ token
main.cpp:36: error: could not convert ‘((list != 0u) ? (list->SortedList::~SortedList(), operator delete(((void*)list))) : 0)’ to ‘bool’
main.cpp:37: error: expected primary-expression before ‘return’
main.cpp:37: error: expected ‘)’ before ‘return’

My code is as follows:

#include <iostream>
#include "Student.h"
#include "SortedList.h"

using namespace std;

int main() {
    SortedList *list = new SortedList();

    Student create[100];
    int num = 100000;

    for (Student &x : create) { // <--Line 27
        x = new Student(num);
        num += 10;
    }

    for (Student &x : create)
    list->insert(&x);

    delete list;
    return 0;
}

Anybody who possibly knows the source of the error would be of great help. Also, Student and SortedList are objects which are declared in their .h files.

Answer 1

According to this page on GCC’s website, range-based for is only available in g++ 4.6 and up, so you’ll have to convert your code to a normal for loop or use std::for_each or something, or upgrade your compiler.