C++ Programs

Refer the below images for code and outputs and code will be provided just below it fig1. Code fig2. Output of Code  /* Write a C++ program to interchange the values of two variables without using third variable*/ #include <iostream> /* BASIC BUT IMPORTANT HEADER FILE*/ #include <stdio.h> using namespace std; /* FOR STANDARD INPUT OUTPUT */ int main() { int a,b; /* DECLARING VARIABLES AND THEIR DATA TYPES*/     cout << "HELLO EVERYONE, in this program we are interchanging the values of two variables without using third variable with the help of C++ lang. \n\n" ; cout << "\n enter the values for a and b: \n"; cout << "-----------------------------------\n"; cin >>a>>b; cout << "Before interchange: A = " << a << " and B = " << b << "\n"; a = a + b; b = a - b; a = a - b; cout << "After interchange: A = " << a << ...

 Printing AREA and PARAMETER of rectangle by taking input from the user. fig1.code fig2. output  code of this program can be copied from the below:- /*C++ PROGRAM FOR TAKING INPUT FROM THE USER AND GIVING BACK AREA AND PERIMETER OF RECTANGLE*/ #include <iostream> /* BASIC BUT IMPORTANT HEADER FILE*/ #include <stdio.h> using namespace std; /* FOR STANDARD INPUT OUTPUT */ int main() { float ar,peri,width,height=0; /* DECLARING VARIABLES AND THEIR DATA TYPES*/     cout << "HELLO EVERYONE, in this program we are finding AREA of Rectangle and PERIMETER as well with the help of C++ lang. \n\n" ; cout << "\n print the area of rectangle: \n"; cout << "-----------------------------------\n"; cout << "Input the width of the rectangle: \n"; cin >> width; cout << "Input the height of the rectangle: \n"; cin >> height; ar = height * width; peri = 2 * (width + height); cout ...