Write a program of Demonstrate Prefix (unary) Increment in C++

Source Code:

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#include <iostream.h> #include <conio.h> #include <iomanip.h> int main () { int a = 4; cout << "value of a : " << setw(2) << a << endl; cout << "value of ++a : " << setw(2) << ++a << endl; cout << "new value of a : " << setw(2) << a << endl; getch (); return 0; }// main

Output:

value of a     : 4
value of a     : 5
new value of a : 5