Assignment 4: User Defined Function Set1

user defined function
[SET – 1]

1	Write a program using function which accept two integers as an argument and return its sum. Call this function from main( ) and print the results in main( ). solution
2	Write a function to calculate the factorial value of any integer as an argument. Call this function from main( ) and print the results in main( ). solution
3	Write a function that receives two numbers as an argument and display all prime numbers between these two numbers. Call this function from main( ). solution
4	Raising a number to a power p is the same as multiplying n by itself p times. Write a function called power that takes two arguments, a double value for n and an int value for p, and return the result as double value. Use default argument of 2 for p, so that if this argument is omitted the number will be squared. Write the main function that gets value from the user to test power function. solution
5	Write a function called zero_small() that has two integer arguments being passed by reference and sets the smaller of the two numbers to 0. Write the main program to access the function. solution
6	Write the output of the following program : #include <iostream.h> void X(int &A, int &B) { A = A + B; B = A - B; A=A-B; } void main() { int a = 4, b =18; X(a,b); cout<<a<<”,”<<b; }
7	Write the output of the following program: #include <iostream.h> void X(int A, int &B) { A = A+B; B = A-B; A = A-B; } void main() { int a=4, b=l8; X(a,b); cout<< a <<”,”<<b; }
8	Write the output of the following program: # include <iostream.h> void Execute(int &B, int C=100) { int TEMP = B + C; B += TEMP; if (C == 100) cout<<TEMP<<" "<<B<<" "<<C<<endl; } void main() { int M= 90, N = 10; Execute(M); cout << M << “ “<< N << endl; Execute(M,N); cout << M<<“ "<<N<< endl; }
9	Give the output of the following program # include <iostream.h> int global = 10; void func(int &x, int y) { x = x - y; y = x * 10; cout << x << << y << '\n'; } void main() { int global = 7: func (::global, global); cout << global <<”,” << ::global <<’\n’; func(global,:: global); cout<< global << “,”<<::global<<‘\n’; }
10	Write the output of the following program : # include <iostream.h> static int i=100; void abc() { static int i=8; cout<< "first=" <<i++; } main() { static int i = 2; abc(); cout << "second =” << i << endl; abc(); }
11	Write the output of the following program: # include <iostream.h> int func(int &x, int y = 10) { if (x%y == 0) return ++x; else return y--; } void main() { int p=20, q=23; q=func (p,q); cout << p << " " << " " << q << endl; p=func (q); cout<< p << " " << " " << q << endl; q=func (p); cout << p << " " << " " << q << endl; }