I made a function, and I want to retrieve two returns, not a single return such as this example:
long Conv(double num){
long a,b;
a = floor(num);
b = num * pow(10,6) - a * pow(10,6);
return a;
return b;
}
When I call the function
long a = Conv(30.233456);
the question is: how do I retrieve b?
You can't return two times at once.
You could pass b to your function by reference.
yourfunction( long a , long* b )
{
*b = a + 10;
//more code
return a;
}
a = yourfunction(a , &b );
You can't return more than one value from a function in C. Either return a struct, or pass by reference and modify in the function.
Example 1: struct
struct ab {
long a;
long b;
}
struct ab Conv(double num) {
struct ab ab_instance;
ab_instance.a = floor(num);
ab_instance.b = num * pow(10,6) - a * pow(10,6);
return ab_instance;
}
Example 2: pass b by reference
long Conv(double num, long& b) {
long a;
a = floor(num);
b = num * pow(10,6) - a * pow(10,6);
return a;
}
struct ab ab_instance.
Armin kind of answered it, but here is some sample code:
int get_both(int* b) {
a = 0;
*b = 1;
return a;
}
structwith both values in it, or have your function take pointers toaandband write the values there.floor(num)to geta(if you need it outside the function), and returnbfrom your function. If you only want to calculateaonce, pass it into the function as a parameter.Flooris already a different function.