how to work in C++ from basic to advance

Q) Write a program which prints number from 1 to 10 in c++ from basic to advance.

This program used to print number from 1 to 10 in c++ from basic to advance.

"Code of the program"

#include<iostream>

using namespace std;

int main()

{

int a = 1;

while (a <= 10){

cout << a << endl;

a++;

}

system("pause");

}

"Snippet of the program"

Q)Write a program in which a user inputs three numbers and displays the largest number.

*)In this program, a user is asked to enter three numbers.
this program finds out the largest number among three numbers entered by a user and displays it with proper message.this tutorial appears in c++ from basic to advance.

RUN sample Example
Enter three numbers: 78 98 16
Greatest number is 98

"Code of the program"

#include<iostream>
using namespace std;
int main()
{
int a, b, c;
cout << " Enter value for first number";
cin >> a;

cout << " Enter value for second number";
cin >> b;

cout << " Enter value for third number";
cin >> c;
if (a>=b && a>=c)
{
cout << " First number is greatest:" << a;
}
else if (b>=a && b>=c) {
cout << " Second number is greatest" << b;
}
else if (c > a && c > b);
{
cout << " Third number is greatest"<< c;
}
system("pause");

}

"Snippet of the program"

Q)Write a program which calculates the sum of first 10 natural number.

*) This program used to calculate the sum of first 10 natural number in c++ from basic to advance.

"Code of the program"

#include<iostream>

using namespace std;

int main()

{

int a = 1, sum = 0;

while (a <= 10){

sum += a;

a++;

}

cout << "Sum :" << sum << endl;

system("pause");

}

"Snippet of the program"

Q)If three ages are input by a user, write a program to determine the youngest of the three.

*)This program finds out youngest of the three ages input through the keyboard. We can understand that the code in c++ from basic to advance.

For example.

When we enter three ages Shayan=20, Arshad=23 & Ashar=19 the output of this program is "Ashar is youngest" because age of Ashar is 19

so he is the youngest one.

"Code of the program"

#include<iostream>
using namespace std;
int main()
{
int Shayan_age, Arshad_age, Ashar_age;
cout << "Enter Shayan Age :" << endl;
cin >> Shayan_age;
cout << "Enter Arshad Age :" << endl;
cin >> Arshad_age;
cout << "Enter Ashar Age :" << endl;
cin >> Ashar_age;
if (Arshad_age < Shayan_age&&Arshad_age < Ashar_age){
cout << "Arshad is youngest";
}
else if (Shayan_age < Arshad_age&&Shayan_age < Ashar_age){
cout << "Shayan is youngest";
}
else{
cout << "Ashar is youngest";
}

system("pause");

}

"Snippet of the program"

Q)Write a program which accepts a character and display its next character.

*)Accept a character from the keyboard and display the next character in order.

RUN sample Example(1)
Enter any character : D
Next character is: E

RUN sample Example(2)
Enter any character: F
Next character is: G

"Code of the program"

#include<iostream>
using namespace std;
int main()

{
char choice;
cout << "Enter any character :" << endl;
cin >> choice;
choice++;
cout << "Next character is :" << choice << endl;

system("pause");

}

"Snippet of the program"

Q)Write a program to determine whether the seller has made a profit or loss. Also, find how much profit or loss he made. Cost price and selling price of an item are input by the user.

*)When cost price and selling price of an item is input through the keyboard,
this program determines the c++ from basic to advance whether the seller has made a profit or incurred loss.
and this program also determines how much profit he made or loss he incurred.

RUN sample Example(1)
Enter price of item: 800
Enter selling price of item: 950
Profit: 150

RUN sample Example(2)
Enter price of item: 800
Enter selling price of item: 600
Loss: 200

RUN sample Example(3)
Enter price of item: 800
Enter selling price of item: 800
No profit no loss

"Code of the program"

#include<iostream>
using namespace std;
int main()

{
int costprice, sellingprice, result;
cout << "Enter cost price of item :";
cin >> costprice;
cout << "Enter selling price of item :";
cin >> sellingprice;
result = sellingprice - costprice;
if (result > 0){
cout << "Profit :" << result << endl;
}
else if (result < 0){
cout << "Loss :" << -(result) << endl;
}
else{
cout << "No Profit no loss :" << endl;
}

system("pause");

}

"Snippet of the program"

Q) when a character enters by a user; write a program to find whether the character entered is a capital or small letter, digit or symbol. The table given below shows the range of ASCII values for various characters.

Characters ASCII Values
A – Z 65 – 90
a – z 97 – 122
0 – 9 48 – 57
special symbols 0 - 47, 58 - 64, 91 - 96, 123 – 127

*)This C++ program in c++ from basic to advance to check whether a given character is an uppercase or lowercase alphabet,
a digit or a special character.

RUN sample Example (1)
Enter any character:D
Character is a capital letter

RUN sample Example (2)
Enter any character:b
Character is a small letter

RUN sample Example (3)
Enter any character:4
Character is a digit

RUN sample Example (4)
Enter any character:#
Character is a special symbol

"Code of the program"

#include<iostream>
using namespace std;
int main( )

{
char character;
cout << "Enter any character :" << endl;
cin >> character;
if (character >= 65 && character <= 90)
cout << "Character is a capital letter" << endl;
else if (character >= 97 && character <= 122)
cout << "Character is a small letter" << endl;
else if (character >= 48 && character <= 57)
cout << "Character is a digit" << endl;
else if (((character > 0 && character <= 47) || (character >= 58 && character <= 64)) || ((character >= 91 && character <= 96) || (character >= 123 && character <= 127)))
cout << "Charater is a special symbol" << endl;

system("pause");

}

"Snippet of the program"

Q)Write a program to check whether the given number is positive or negative.

*)In this program, we are checking whether the input integer number is positive or negative.
If the input number is greater than zero then its positive else it is a negative number in c++ from basic to advance.

RUN sample Example (1)
Enter any Number: 56
Number is positive

RUN sample Example (2)
Enter any Number: -14
Number is negative

"Code of the program"

#include<iostream>
using namespace std;
int main()

{

int a;

cout << ("enter any number :");
cin >> a;

if (a >= 0)
{
cout << "the number is postive" << endl;

}
else{
cout << "the number is negative" << endl;
}

system("pause");

}

"Snippet of the program"

Q)Write a program to check whether a triangle is valid or not, when the three angles of the triangle are entered by the user.A triangle is valid if the sum of all the three angles is equal to 180 degrees.

*)Three sides of a triangle are entered through the keyboard,
the triangle is valid if the sum of three sides is equal to 180 otherwise it is non-valid.

RUN sample Example (1):
Enter three angles of triangle:60 50 50
"Triangle is not valid".

RUN sample Example (2):
Enter three angles of triangle:60 90 30
"Triangle is valid".

"Code of the program"

#include<iostream>
using namespace std;
int main()

{
int angle A, angle B, angle C;

cout << "Enter the three angles of triangle :" << endl;

cin >> angleA >> angleB >> angleC;

if (angleA + angleB + angleC == 180){

cout << "Triangle is valid" << endl;
}
else{
cout << "Triangle is not valid" << endl;
}

system("pause");

}

"Snippet of the program"

Q)What is the output of following program?
float net = 5689.2356;
cout.precision(2);
cout.setf(ios::fixed | ios::showpoint);
cout << net << endl;

"Code of the program"

#include<iostream>
using namespace std;
int main()

{

float net = 9689.2356;
cout.precision(2);
cout.setf(ios::fixed | ios::showpoint);
cout << net << endl;
system("pause");

}

"Snippet of the program"

Q)Find the absolute value of a number entered by the user.

Absolute value:
An absolute value of a number is the distance of a number from zero on the number line.
An absolute value is always positive since a distance is nonnegative. Essentially, if you want the absolute value of a nonnegative number,
it's just that number.

RUN sample Example (1):
Enter any number:-57
The absolute value of number is:57

RUN sample Example (2):
Enter any number:50
The absolute value of number is:50

"Code of the program"

#include<iostream>
using namespace std;
int main()

{

int b;
cout << "Enter any number :" << endl;
cin >> b;
if (b > 0){
cout << "The absolute value is :" << b << endl;
}
else{
cout << "The absolute value is :" << -(b) << endl;
}
system("pause");

}

"Snippet of the program"

Q)Write a program which accepts amount as integer and displays the total number of Notes of Rs. five hundred, hundred, fifty, twenty, ten, five and one.

"Code of the program"

#include<iostream>

using namespace std;

int main()

{

int amount, r500, r100, r50, r20, r10, r5, r1;

cout << "Enter Amount :";

cin >> amount;

r500 = amount / 500;

amount = amount % 500;

r100 = amount / 100;

amount = amount % 100;

r50 = amount / 50;

amount = amount % 50;

r20 = amount / 20;

amount = amount % 20;

r10 = amount / 10;

amount = amount % 10;

r5 = amount / 5;

amount = amount % 5;

r1 = amount;

cout << "Rs.500 :" << r500 << "\n Rs.100 :" << r100 << "\n Rs.50 :" << r50 << "\n Rs.20 :" << r20 << "\n Rs.10 :" << r10 << "\n Rs.5 :" << r5 << "\n Rs.1 :" << r1 << endl;

system("pause");

}

"Snippet of the program"

Q)Write a program to calculate the total amount of expenses.Quantity and price of the item are input by a user and discount of 10 percent is offered if the expenses are more than Five thousand.

*) This program in c++ from basic to advance used to calculate the total expenses.

Quantity and price per item are input by the user and discount of 10% is offered if the expense is more than 5000.

RUN sample Example (1)

Enter quantity:14

Enter price:300

Total Expense is Rs.4200

RUN sample Example (2)

Enter quantity:50

Enter price:300

Total Expense is Rs. 13500

"Code of the program"

#include<iostream>

using namespace std;

int main()

{

int totalexpense, quantity, price, discount;

cout << "Enter Quantity :" << endl;

cin >> quantity;

cout << "Enter Price :" << endl;

cin >> price;

totalexpense = quantity*price;

if (totalexpense > 5000){

discount = (totalexpense*0.1);

totalexpense = totalexpense - discount;

}

cout << "Total Expense is Rs." << totalexpense << endl;

system("pause");

}

"Snippet of the program"

Q)Write a program to calculate the monthly telephone bills as per the following rule:

Minimum Rs. 200 for up to 100 calls.

Plus Rs. 0.60 per call for next 50 calls.

Plus Rs. 0.50 per call for next 50 calls.

Plus Rs. 0.40 per call for any calls beyond 200 calls.

*)This program in c++ from basic to advance simply calculate the monthly telephone bills.

RUN sample Example(1)

Enter number of calls: 90

Your bill is Rs.200

RUN sample Example(2)

Enter number of calls: 145

Your bill is Rs.227

"Code of the program"

#include<iostream>

using namespace std;

int main()

{

int calls;

float bill;

cout << "Enter numbers of calls :";

cin >> calls;

if (calls <= 100)

bill = 200;

else if (calls > 100 && calls <= 150){

calls = calls - 100;

bill = 200 + (0.6*calls);

}

else if (calls > 150 && calls <= 200){

calls = calls - 150;

bill = 200 + (0.6 * 50) + (0.50*calls);

}

else{

calls = calls - 200;

bill = 200 + (0.6 * 50) + (0.50 * 50) + (0.40*calls);

}

cout << "Your bill is Rs." << bill << endl;

system("pause");

}

"Snippet of the program"

Q)Write a program which accepts days and displays the total number of years, months and days in it

*) This program in c++ from basic to advance accepts a number of days and print the total number of years, month and days in it.

RUN sample Example:

Enter no. of days: 796

Years: 2

Months: 2

Days: 6

"Code of the program"

#include<iostream>

using namespace std;

int main()

{

int days, month, year, day;

cout << "Enter no. of Days :" << endl;

cin >> days;

year = days / 365;

days = days % 365;

month = days / 30;

day = days % 30;

cout << "Years :" << year << "\n Months :" << month << "\n Days :" << day << endl;

system("pause");

}

"Snippet of the program"

Q)In a company an employee is paid as under If his basic salary is less than Rs. fifteen hundred(1500), then HRA = ten percent (10%) of basic salary and DA = 90 percent(%) of basic salary.If his salary is equal to or above Rs. fifteen hundred (1500), then HRA = Rs 500 and DA = 98 percent(%) of salary. If any employee salary is input by a user writes a program to find his gross salary.

*)This program in c++ from basic to advance calculates the simple interest from the given conditions.

It just explains the use of the if-else statement.

RUN sample Example (1)

Enter basic salary of Employee: 1300

Gross salary is: 2600

RUN sample Example (2)

Enter basic salary of Employee: 2500

Gross salary is: 5450

"Code of the program"

#include<iostream>

using namespace std;

int main()

{

float basic_salary, gross_salary, HRA, DA;

cout << "Enter basic salary of Employee :" << endl;

cin >> basic_salary;

if (basic_salary){

HRA = 0.1*basic_salary;

DA = 0.9*basic_salary;

}

else {

HRA = 500;

DA = 0.98*basic_salary;

}

gross_salary = basic_salary + HRA + DA;

cout << "Gross salary is :" << gross_salary << endl;

system("pause");

}

"Snippet of the program"

Q)Write a program which finds the roots of the quadratic equation of type "sx2+dx+f" where s is not equal to zero.

*)The term b2-4ac is known as the determinant of a quadratic equation. The determinant tells the nature of the roots.

If the determinant is greater than 0, the roots are real and different.

If the determinant is equal to 0, the roots are real and equal.

If the determinant is less than 0, the roots are complex and different.

RUN sample Example (1)

Enter value of a, b and c: 1.0 -10.0 25.0

Roots are real & equal

Root 1= 5

Root 2= 5

RUN sample Example (2)

Enter value of a, b and c: 1.0 2.0 5.0

Roots are imaginary

Root 1= -1

Root 2= 2

"Code of the program"

#include<iostream>

using namespace std;

int main()

{

float x1, x2, x3, x4, root1, root2;

cout << "Enter value x1,x2 and x3 :" << endl;

cin >> x1 >> x2 >> x3;

x4 = x2*x2 - 4 * x1*x3;

if (x4 == 0){

root1 = (-x2) / (2 * x1);

root2 = root1;

cout << "Roots are real and equal" << endl;

}

else if (x4 > 0){

root1 = -(x2 + sqrt(x4)) / (2 * x1);

root2 = -(x2 - sqrt(x4)) / (2 * x1);

cout << "Roots are real and distinct" << endl;

}

else {

root1 = (-x2) / (2 * x1);

root2 = sqrt(-x2) / (2 * x1);

cout << "Roots are imaginary" << endl;

}

cout << "\n Root1=" << root1 << "\n Root2=" << root2 << endl;

system("pause");

}

"Snippet of the program"

Q)Write a program to add three numbers.

"Code of the program"

#include<iostream>
using namespace std;

int main()

{

int a, b, c, d;
cout << "Enter three numbers" << endl;
cin >> a;
cin >> b;
cin >> c;
d = a + b + c;

cout << "Value of d = " << d << endl;
return 0;

}

"Snippet of the program"

Q)How declaring and defining a variables are different ?

"Code of the program"

#include<iostream>
using namespace std;

int main()
{
// intializing different types of variables

bool bvalue;
int invalue;
char chvalue;
float fvalue;
double dvalue;

// assigning values

bvalue = true;
chvalue = 'a';
invalue = 656;
fvalue = 5.9;

dvalue = 555544344;

return 0;
}

Q)Write a program that takes necessary inputs and compute the formula for (a + b)2 i.e.takes two integer or float variable inputs then computes a2 + 2 * a*b + b2?

"Code of the program"

#include<iostream>
using namespace std;

int main()
{
int a, b;
cout << "Enter two numbers" << endl;
cin >> a >> b;
cout << a*a + 2 * a*b + b*b << endl;
return 0;
}

"Snippet of the program"

Q)Write a program to swap value of two variables without using the third variable.

*)This program use to swap value of two variables without using the third variable. We can understand that the code display in c++ from basic to advance.in c++ from basic to advance

RUN sample Example

Enter two numbers: 12 34

After swapping numbers are: 34 12

"Code of the program"

#include<iostream>

using namespace std;

int main()

{

int a, b;

cout << "Before swaping the value :" << endl;

cin >> a >> b;

a = a + b;

b = a - b;

a = a - b;

cout << "After swaping the value:" << endl;

cout << a << "\n" << b;

system("pause");

}

"Snippet of the program"

Q)Write a program to calculate the area of circle. (Area = πr ^ 2)

"Code of the program"

#include<iostream>

using namespace std;

int main()

{
float A, r, pi = 3.142;
cout << "Enter the radius of circle" << endl;
cin >> r;
A = pirr;
cout << "Area of circle :" << A << endl;

return 0;
}

"Snippet of the program"

Q) Write a program to split UNIT, TEN and HUNDRED place digits of a three digit number

"Code of the program"

#include<iostream>

using namespace std;

int main()

{
int a, b, c;
cin >> a >> b >> c;
bool acheck = false;
bool bcheck = false;
bool ccheck = false;
if (a <= 9){
cout << "Value a is unit\n";
acheck = true;
}
if (a <= 99 && acheck == false){
cout << "Value a is ten\n";
acheck = true;
}
if (a <= 999 && acheck == false){
cout << "Value a is hundred\n";
}

if (b <= 9){
cout << "Value b is unit\n";
bcheck = true;
}
if (b <= 99 && bcheck == false){
cout << "Value b is ten\n";
bcheck = true;
}
if (b <= 999 && bcheck == false){
cout << "Value b is hundred\n";
}

if (c <= 9){
cout << "Value c is unit\n";
ccheck = true;
}
if (c <= 99 && ccheck == false){
cout << "Value c is ten\n";
ccheck = true;
}
if (c <= 999 && ccheck == false){
cout << "Value c is hundred\n";
}

}

"Snippet of the program"

Q)Write a program to input amount in rupees, then convert it into dollar. (1$ = Rs. 101)

"Code of the program"

#include<iostream>

using namespace std;

int main()

{

float rupee, $=101,t;

cout << "Enter the value of rupee" << endl;

cin >> rupee;

t = rupee / $;

cout << t<<endl;

}

"Snippet of the program"

Q)What are unary and binary operators, how are they different ?

"Code of the program"

#include<iostream>

using namespace std;

int main()

{
int x, y;
int res1, res2;
x = 10;
y = 20;

res1 = x + y;
res2 = (x == y);
printf("res1:%d", "res2:%d\n", res1, res2);
/++ Increment Operator*
-- Decrement Operator
& Address Operator
-Unary Minus Operator
~(One's Compliment) Negation Operator
!Logical Not/*

int x1 = 10;
int y1;

y1 = (-10);
printf("x1-%d", "y1-%d\n", x1, y1);

printf("Address of x1: %08X\n", &x1);

}

"Snippet of the program"

) Write a program determine whether the input number is even or odd

"Code of the program"

#include<iostream>

using namespace std;

int main()

{

int num;
cout << "Enter any number" << endl;
cin >> num;
if (num % 2 == 0){
cout << "Even number is" << endl;
}
else
{
cout << "Odd number is" << endl;

}

}

"Snippet of the program"

Q)Write a program in C++ to input a single character and print a message “It is a vowel!”, if it is a vowel otherwise print “It is a consonant”.

"Code of the program"

#include<iostream>

using namespace std;

int main()

{
char value;
cout << "enter value" << endl;
cin >> value;
if (value == 'a' || value == 'A' || value == 'e' || value == 'E' || value == 'i' || value == 'I' || value == 'o' || value == 'O' || value == 'u' || value == 'U'){
cout << "This is a vowel" << endl;
}

else

cout << "This is consonant" << endl;

}

"Snippet of the program"

Q)Write a program to perform above task using switch case.

"Code of the program"

#include<iostream>

using namespace std;

int main()

{

char value;

cout << "enter value" << endl;

cin >> value;

switch (value){

case 'a':