ISO C++ forbids declaration of disp1 with no type

[iacharyya]

Hi All,

I am getting this error while compiling a c++ code.
The error is: "ISO C++ forbids declaration of disp1 with no type".
Inside the code I wrote a simple template. The code is like:

#include<iostream>
using namespace std;

template<class T>
class Data{
public:
T t1, t2;
disp1(T v1, T v2)
{
t1=v1;
t2=v2;
cout<<t1<<'\t'<<t2<<endl;
}
Data(){}
~Data(){}
};
int main()
{
Data<int> d_int;
d_int.disp1(11,12);

return 0;
}

[coopstah13]

you need to either declare a return type for the function or make it void

void disp1 {
}

[wje_lf]

For that particular function, I'd vote for void, because the function as posted doesn't seem to want to return anything useful.

[Cabhan]

This is true of every function in C++, with two exceptions: constructors and destructors. These functions (recognizable because they have the name of the class) do not have a return type. Every other function must.

In C (before C99 at least), you are allowed to omit the return type of a function, and it assumed to be int. However, C++ does not allow this.

[i92guboj]

This is true of every function in C++, with two exceptions: constructors and destructors. These functions (recognizable because they have the name of the class) do not have a return type. Every other function must.

In C (before C99 at least), you are allowed to omit the return type of a function, and it assumed to be int. However, C++ does not allow this.

Yep. C++ is far more strict in that regard.

There might be some compilers that allow this, but I always vote for portable code. And since the standard forbids that, it's not portable.