Fundamentals of Computer Programming and IT by Pearson

Functions in C++ 335

cout <<“ l= “<<l << “ k=”<<k;

}

int & large(int & p, int & q)

{

if (p>q) return p;

else return q;

}

OUTPUT:

Enter values of l and k : 4 8

l= 4 k=120

Enter values of l and k : 9 2

l= 120 k=2

Explanation

In function main(), the statement large (l, k)=120; calls the function large(). It

returns reference to the variable containing larger value and assigns the value 120 to it. The

return type of function large() is int & (reference), it indicates that the call to function

large() can be written on the left side of the assignment operator. Consequently, the statement

large (l,k)=120; is legal and assigns 120 to the ...