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Full Discussion: Doubt in structure -- c++
Top Forums Programming Doubt in structure -- c++ Post 59265 by vijaysabari on Wednesday 15th of December 2004 01:04:50 AM
Old 12-15-2004
Doubt in structure -- c++

hi,
Small sample program

#include <iostream>
using namespace std;

typedef struct vijay {

int a;
int b;

}VIJAY;

void main ()
{
VIJAY v;
cout << "a=" << v.a<<endl;
cout << "b=" << v.b<<endl;

if(v) {
cout << "Entered" << endl;
}
}


I am getting error :

line 17: Error: An expression of scalar type was expected.


How to solve this ........
 

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vec(2rheolef)                                                       rheolef-6.1                                                      vec(2rheolef)

NAME
vec - vector in distributed environment (rheolef-6.1) SYNOPSYS
STL-like vector container for a sequential or distributed memory machine model. Additional operation fom classical algebra. EXAMPLE
A sample usage of the class is: int main(int argc, char**argv) { environment distributed(argc, argv); vec<double> x(100, 3.14); dout << x << endl; } IMPLEMENTATION NOTE
Implementation use array<T,M>. IMPLEMENTATION
template <class T, class M = rheo_default_memory_model> class vec : public array<T, M> { public: // typedef: typedef array<T, M> base; typedef typename base::size_type size_type; typedef std::ptrdiff_t difference_type; #ifdef TODO // pb compile avec boost sur foehn: typedef typename base::difference_type difference_type; #endif // TODO typedef basic_range<size_type, difference_type> range_type; typedef typename base::reference reference; typedef typename base::const_reference const_reference; typedef typename base::iterator iterator; typedef typename base::const_iterator const_iterator; // allocator/deallocator: vec (const distributor& ownership, const T& init_val = std::numeric_limits<T>::max()); vec(size_type dis_size = 0, const T& init_val = std::numeric_limits<T>::max()); void resize ( const distributor& ownership, const T& init_val = std::numeric_limits<T>::max()); void resize ( size_type size = 0, const T& init_val = std::numeric_limits<T>::max()); // accessors: const_reference operator[] (size_type i) const; reference operator[] (size_type i); T max_abs () const; // range: vec(const vec_range<T,M>& vr); vec(const vec_range_const<T,M>& vr); vec<T,M>& operator= (const vec_range<T,M>& vr); vec<T,M>& operator= (const vec_range_const<T,M>& vr); vec_range_const<T,M> operator[] (const range_type& r) const; vec_range<T,M> operator[] (const range_type& r); // assignment to a constant: vec<T,M>& operator= (const int& expr); vec<T,M>& operator= (const T& expr); // expression template: template<typename Expr> vec (const Expr& expr); template<typename Expr> vec<T,M>& operator= (const vec_expr<Expr>& expr); template<typename Expr> vec<T,M>& operator+= (const Expr& expr); template<typename Expr> vec<T,M>& operator-= (const Expr& expr); // initializer list (c++ 2011): #ifdef _RHEOLEF_HAVE_STD_INITIALIZER_LIST vec (const std::initializer_list<vec_concat_value<T,M> >& init_list); vec<T,M>& operator= (const std::initializer_list<vec_concat_value<T,M> >& init_list); #endif // _RHEOLEF_HAVE_STD_INITIALIZER_LIST }; rheolef-6.1 rheolef-6.1 vec(2rheolef)
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