C++ Language
#include<iostream.h>
#include<conio.h>
int sum(int,int,int);
void main()
{
int a,b,c,result;
clrscr();
cout<<"Enter values of a,b,c"<<endl;
cin>>a>>b>>c;
result=sum(a,b,c);
cout<<"Sum="<<result;
getch();
}
int sum(int x,int y,int z)
{
return(x+y+z);
}
/*OUTPUT*/
Enter values of a,b,c
2
4
6
Sum=12