Back To C++ User Defined Functions Index

---

//program to pass integer arguments to function using call by reference method #include<iostream.h> #include<conio.h> void swap(int &a,int &b) //example of call by reference { int temp; temp=a; a=b; b=temp; cout<<"\ndisplaying data in swap function "; cout<<"\nvalue of a is "<<a; cout<<"\nvalue of b is "<<b; } void main() { clrscr(); int a,b; cout<<"\nenter value for a "; cin>>a; cout<<"\nenter value for b "; cin>>b; cout<<"\ndisplaying data before calling swap \n"; cout<<"\nvalue of a is "<<a; cout<<"\nvalue of b is "<<b; swap(a,b); cout<<"\ndisplaying data after calling swap \n"; cout<<"\nvalue of a is "<<a; cout<<"\nvalue of b is "<<b; getch(); }