C++

Forum

 
 
How to return 2 variables ?

newdomingo (39)
Hi,

my question is how to return 2 variables, one integer and one double, from a function ?

(pseudocode) i have a function :

1
2
3
4
5
6
7
8
9
 
int fun(){
 int x;
 double y; 

 //computations
 //...

 return x, y; 
}


Any help please ?

Thanks !
Computergeek01 (5613)
Something like this?
1
2
3
4
5
 
struct COMBO
{
     int x;
     double y;
};

And make the return type for the function the type for your object.
newdomingo (39)
yes, right probably another solution could be to make one of those variables global.
Cubbi (4774)
1
2
3
4
5
6
7
8
9
 
pair<int, double> fun(){
 int x;
 double y; 

 //computations
 //...

 return make_pair(x, y); 
}
Last edited on
newdomingo (39)
@Cubbi

how to call the function fun() from main() ?

i mean for example when we have:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
 
int fun(){
 int x; 

 //computations
 //...

 return x; 
}

int main(void){
  int y;
  y = fun(); // here i call function fun() 
  return 0;
}


when we have 

1
2
3
4
5
6
7
8
9
 
pair<int, double> fun(){
 int x;
 double y; 

 //computations
 //...

 return make_pair(x, y); 
}


how to call this function from main() ?
Cubbi (4774)
In this case,
1
2
 
  int y;
  y = fun().first;

could also be
1
2
3
4
5
 
int x;
double y;
pair<int, double> p = fun();
x = p.first;
y = p.second;

or
1
2
3
 
int x;
double y;
tie(x, y) = fun();
Topic archived. No new replies allowed.