C++
Program to compute the fibonacci series
#include <iostream.h>
#include <conio.h>
void main()
{
clrscr();
int a,b,x,y,num1,ct;
a=0;
b=1;
cout << "Enter the number of terms (less than 25) : " << endl;
cin>>num1;
cout << a << endl;
cout << b << endl;
for(ct=1;ct<=num1-2;ct++)
{
x=a+b;
cout...
>>
———
Program to find the total days in the year till date
#include <iostream.h>
#include <conio.h>
void main()
{
clrscr();
int day,month,total;
int days_per_month[12]={31,28,31,30,31,30,31,31,30,31,30,31};
cout << "Enter the month : " << endl;
cin>>month;
cout << "Enter the day : " << endl;
cin>>day;
total=day;
for(int...
>>
———
Program to convert days into years and weeks
#include <iostream.h>
#include <conio.h>
void main()
{
clrscr();
int days,years,weeks,num1;
cout << "Enter the number of days : " << endl;
cin>>days;
years=days/365;
num1=days-(years*365);
weeks=days/7;
num1=days-(weeks*7);
cout << days << " days = " <<...
>>
———
Program to convert 2-digit octal number into binary number and print it
#include <iostream.h>
#include <conio.h>
void octobin(int);
void main()
{
clrscr();
int a;
cout << "Enter a 2-digit octal number : ";
cin>>a;
octobin(a);
getch();
}
void octobin(int oct)
{
long bnum=0;
int A[6];
//Each octal digit is converted into 3 bits, 2 octal digits = 6 bits.
int...
>>
———
Program to find the sum of each row & column of a matrix of size n x m and if matrix is square, find the sum of the diagonals also.
#include <iostream.h>
#include <conio.h>
int main()
{
clrscr();
int A[10][10],m,n,x,y,sum=0;
//Create a Matrix A
cout << "Enter number of rows and columns in Matrix A : \n";
cin>>n>>m;
cout << "Enter elements of Matrix A :...
>>
———
Program to enter an integer and print its total value based on the formula 'x - 1/3!x^3 + 1/5!x^5 - 1/7!x^7 + 1/9!x^9'
#include <iostream.h>
#include <conio.h>
#include <math.h>
int main()
{
clrscr();
float factorial=1;
float num,tot,term,total;
int i,n=20,index,j=1;
cout << "Enter a single-digit integer :...
>>
———
Program to enter an integer and output it in the reversed form
#include <iostream.h>
#include <conio.h>
void main()
{
clrscr();
long int num1,num2,rnum=0;
cout << "Enter an integer : " << endl;
cin>>num1;
num2=num1;
do
{
rnum=rnum*10;
int digit=num1%10;
rnum+=digit;
num1/=10;
}
while(num1);
cout << "The integer you typed is " <<...
>>
———
Program to find the roots of a quadratic equation
#include <iostream.h>
#include <conio.h>
#include <math.h>
int main()
{
clrscr();
float a,b,c,d,root1,root2;
cout << "Enter the 3 coefficients a, b, c : " << endl;
cin>>a>>b>>c;
if(!a){
if(!b)
cout << "Both a and b cannot be 0 in ax^2 + bx + c = 0" <<...
>>
———
Program to enter salary and output income tax and net salary
#include <iostream.h>
#include <conio.h>
void main()
{
clrscr();
int itrate;
float salary,itax,nsalary=0;
cout << "Enter the salary : ";
cin>>salary;
if(salary>15000)
{
itax=salary*30/100;
itrate=30;
}
else...
>>
———
Program to count the number of words and characters in a sentence
#include <iostream.h>
#include <conio.h>
void main()
{
clrscr();
int countch=0;
int countwd=1;
cout << "Enter your sentence in lowercase: " << endl;
char ch='a';
while(ch!='\r')
{
ch=getche();
if(ch==' ')
countwd++;
else
countch++;
}
cout << "\n Words = " << countwd...
>>
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