Computer Education

A C++ Isosceles Triangle Program

2009-12-04T10:37:00.001-08:00

Isosceles Triangle:

#include<stdio.h>
#include<conio.h>
int main()
{
int cntro,cntra,cntri, height=0;
printf("Enter height of pyramid: ");
scanf("%i",&height);
for(cntro=1;cntro<=height;cntro++) { for(cntri=height;cntri>cntro;cntri–)
printf(" ");
for(cntra=1;cntra<=cntro;cntra++)
printf("* ");
printf("\n");
}
getch();
return 0;
}

OUTPUT:
(A TRIANGLE OF ASTERISK(*))

A C++ Right Triangle Program

2009-12-04T10:37:00.000-08:00

The Famous Right Triangle Program:
#include<stdio.h>
#include<conio.h>
main()
{
int height, counter, cntra;
printf("Enter height of triangle: ");
scanf("%i", &height);
for (counter=1; counter<=height; counter++) { for(cntra=1;cntra<=counter; cntra++)
printf("*");
printf("\n");
}
getch();
return 0;
}

OUTPUT:
*
**
***
****

Temperature Conversion Program in C++

2009-12-04T10:36:00.000-08:00

A C++ Program That converts Temperatures:
#include<stdio.h>
#include<conio.h>

int main()
{
float temp_fahrenheit, temp_celsius;
char option=’ ‘;
printf("\n Choose type of conversion:");
printf("\n\t[F]ahrenheit to Celsius");
printf("\n\t[C]elsius to Fahrenheit");
printf("\nEnter option: ");
scanf("%c",&option);

switch(option)
{
case ‘F’: case ‘f’:
printf("Enter temperature value in Fahrenheit: ");
scanf("%f",&temp_fahrenheit);
temp_celsius = (temp_fahrenheit – 32) * 5/9;
printf("%.2f degrees Fahrenheit is equal to %.2f degrees Celsius", temp_fahrenheit, temp_celsius);
break;
case ‘C’: case ‘c’:
printf("Enter temperature value in Celsius: ");
scanf("%f",&temp_celsius);
temp_fahrenheit = (temp_celsius * 9/5)+ 32;
printf("%.2Lf degrees Celsius is equal to %.2f degrees Fahrenheit", temp_celsius, temp_fahrenheit);
break;
default:
printf("Unknown option selected.");
break;
}
printf("\nExiting …");
getch();
return 0;
}

C++ Calendar

2009-12-04T09:46:00.000-08:00

A C Programming Exercise using Program Control
Structures

#include<stdio.h>
#include<conio.h>
int main()
{
unsigned int day=0, month=0, year=0, f_day=0, f_month=0, f_year=0;
int invalid_input=0, invalid_date=0;
char response=’y';
while (response==’Y'||response==’y')
{
printf("Enter date [dd mm yyyy]: ");
scanf("%i %i %i", &day, &month, &year);
if (day<1)
invalid_input++;
if (month<1 || month>12)
invalid_input++;
if (year<1)
invalid_input++;
switch (month)
{
case 1: case 3: case 5: case 7: case 8: case 10:
if (day>31)
invalid_date++;
else
{
if(day==31)
{
f_day=1;
f_month=month+1;
}
else
{
f_day=day+1;
f_month=month;
}
}
f_year=year;
break;
case 12:
if (day>31)
invalid_date++;
else
{
if(day==31)
{
f_day=1;
f_month=1;
f_year=year+1;
}
else
{
f_day=day+1;
f_month=month;
f_year=year;
}
}
break;
case 4: case 6: case 9: case 11:
if (day>30)
invalid_date++;
else
{
if(day==30)
{
f_day=1;
f_month=month+1;
}
else
{
f_day=day+1;
f_month=month;
}
}
f_year=year;
break;
case 2:
if(year%4==0)
{
if (day>29)
invalid_date++;
else
{
if(day==29)
{
f_day=1;
f_month=month+1;
}
else
{
f_day=day+1;
f_month=month;
}
}
}
else
{
if (day>28)
invalid_date++;
else
{
if(day==28)
{
f_day=1;
f_month=month+1;
}
else
{
f_day=day+1;
f_month=month;
}
}
}
f_year=year;
break;
}
if (invalid_input>0)
printf("INVALID INPUT!!!!");
else if (invalid_date>0)
printf("INVALID DATE!!!!");
else
{
printf("Date following ");
if (day<10)
printf("0");
printf("%i:",day);
if (month<10)
printf("0");
printf("%i:",month);
if (year<10)
printf("000");
if (year>10 && year<100)
printf("00");
if (year>100 && year<1000)
printf("0");
printf("%i",year);
printf(" is ");
if (f_day<10)
printf("0");
printf("%i:",f_day);
if (f_month<10)
printf("0");
printf("%i:",f_month);
if (f_year<10)
printf("000");
if (f_year>10 && f_year<100)
printf("00");
if (f_year>100 && f_year<1000)
printf("0");
printf("%i.",f_year);
}
printf("\nRetry[Y/N]:");
scanf("%s",&response);
fflush(stdin);
}
getch();
return 0;
}

Slow Loading Computer - Make My PC Run Faster

2009-12-03T07:34:00.000-08:00

A slow computer is obviously a serious charge. Many people wonder: "How can I make my PC run faster?

Unfortunately, since it is a popular problem, each brother and their 2 cents, he is wiling to how to fix it.

And since not a single appropriation for each system to work, he may find a real nightmare to know what to do. To help you cut through the chaos, here are 3 tips you can apply immediately.

TIP # 1) eliminate trash ""

Just get rid of words - the unnecessary programs that you do not need. Above all, focus on start-up "automatic" programs, which, if the computer does not start.

Often when you download files, they have a default setting that they start to self-imposed system. All this consumes a huge amount of RAM.

Either get rid of it completely, or ...

Simply turn the function that starts automatically led. I recommend the latter if you have not eaten over the last 6 months.

TIP # 2) Get rid of "temporary" files

It is one of the greatest criminals of the load "slow computer. You can do yourself - but I recommend you make it free software to do it for you. This is not only easier, but the software is more comprehensive than you too.

But remember ...

With two quick tips above to your system, it is deleted after the to'm files in the "recycling" and stop all of them to go critical.

People often reject something - but he forgot to remove the trash. Therefore, the file can not eat memory.

Tip # 3) Get rid of desktop icons "

This can also accelerate very good effect on your system, because the symbols will take a lot of resources on your computer.

This is not only ideal for getting rid of precious disk space, but it is also good to be able to keep organized. I guarantee you, think more clearly and accomplish more if you are not over 25 years a screen full of symbols and staring at you.

To answer the question above: "I make my PC run faster? If you set measures, with the advice you receive from your computer "slow loading is no longer a problem very quickly. In other words, now get to start.

Ways to Speed Up Your Computer in 60 Minutes Or Less

2009-12-03T07:33:00.000-08:00

What are the 5 best ways to speed up your computer performance? There are great people who work and they are here.

Step # 1) Get rid of "automatic" loading programs

This could be the most important step of all. These things are killers. Believe it or not, many of these things you've downloaded forget 2 years ago - and everything that starts automatically with your system.

Obviously, most current programs ... be slower to boot the PC and eventually executed. I guarantee you that you're eliminating 90% of environmental impacts and none of the poor.

Step # 2) Increase your RAM

It is superfluous ... But by removing all unused files from your hard drive is one of the most effective methods to increase system performance. More memory is available, the proper functioning of all.

But all my files are important!

I doubt that. One would think they most need them, but I can say with certainty that you share what you will not be used during the last 6 months SHOCKED.

Probably you'll probably only 10-20% of cases in hand. This is one of the 5 best ways to measure the speed of your computer on the planet.

STEP # 3) "Defragment" your files

This principle can organize your programs in a better system so that the computer can not find what he needs ... if she needs it.

Over time, your programs can be confusing at the end ... and it is very difficult for the PC to find them. Defragment worries.

STEP 4) Search VIRUS #

Often, people find their system after it has infected too late. Not let this happen to you.
The truth is that the slow system is often a warning sign that the early stages of a virus. If you take these things only get worse.

Just load a respected anti-virus software and let it work its "magic.

Usually, they will send you a free scan ... But you pay for really getting rid of the virus. I suggest you bite the bullet and do it, it's a great mall of the cost and benefits for your system, it is worth.

But be careful

I strongly recommend you avoid, 100% free software, they are either totally useless, and probably outright scams. Why should we take time to develop it anyway?

Often, these scams have to draw users in. .. inspection and when the antivirus software download you also get spyware "side" with him.

Sometimes you will not see until your computer is shut down, or your identity has been stolen. This is why it is so important to stay with reputable companies.

STEP # 5) Get rid of desktop icons "

It is so much for your peace of mind for your system. Remember: "icons" take himself a little space, even without the program.

Obviously, getting rid of the program is important as well ... But even if you plan to keep some files, only the removal of symbols may remove flexibility. Implement these 5 ways to speed up your computer and you will see a big boost soon.

Divisors of a Number in C

2009-12-01T09:20:00.001-08:00

A program in c++ where the user inputs a whole number.If the number inputted is negative,it will display, “Input Error!!”. But if the number is positive,then it would display its divisors.
#include<stdio.h> //preprocessor directive
#include<conio.h>
int main()
{
long int numb=0,divisor=1;
printf("\nInput a whole number:");
scanf("%li",&numb);
if(numb<=0)
printf("\nInvalid Input!!");
else
{
printf("The divisors of %li are ",numb);
for(divisor=1; (divisor<=numb);divisor++)
{
if (divisor==1)
{
printf("%li",divisor);
continue;
}
if(divisor==numb)
printf(" and %li.",divisor);
else if(numb%divisor==0)
printf(", %li",divisor);
else
continue;
}
}
getch();
return 0;
}

Calculator Program in C++

2009-12-01T09:20:00.000-08:00

A Simple Calculator Program in C using functions

#include //preprocessor directive
#include

long double add(long double, long double); //addition function prototype
long double subtract(long double,long double); //subtraction function prototype
long double multiply(long double,long double); //multiplication function prototype
long double divide(long double,long double); //division function prototype

int main()
{
long double first_number, second_number, output;
char option, response=’Y';

do
{
//clrscr();
first_number=0.00, second_number=0.0, output=0.0;
printf("\nEnter the value of the first number: ");
scanf("%Lf", &first_number);
printf("\nEnter the value of the second number: ");
scanf("%Lf", &second_number);
printf("\nArithmetic Operations");
printf("\n\tAdd\n\tSubtract\n\tMultiply\n\tDivide\nEnter Option: ");
scanf("%s", &option);
fflush(stdin);

switch(option)
{
case ‘a’: case ‘A’:
output=add(first_number,second_number);
printf("%Lg + %Lg = %Lg", first_number, second_number, output);
break;

case ’s’: case ‘S’:
output=subtract(first_number,second_number);
printf("%Lg – %Lg = %Lg", first_number, second_number, output);
break;

case ‘m’: case ‘M’:
output=multiply(first_number,second_number);
printf("%Lg * %Lg = %Lg", first_number, second_number, output);
break;

case ‘d’: case ‘D’:
if (first_number==0.00 &&second_number==0.00)
printf("\nError!!! Cannot Divide by O.");
else if(second_number==0.00)
printf("\nResult of function is undefined");
else
{
output=divide(first_number,second_number);
printf("%Lg / %Lg = %Lg", first_number, second_number,output);
}
break;

default:
printf("Unknown option entered");
break;
}

printf("\nRetry?[Y/N]: ");
scanf("%s", &response);
fflush(stdin);
}while (response==’Y'||response==’y');
printf("Exiting…");
getch();
return 0;
}

long double add(long double a, long double b)
{
return a+b;
}

long double subtract(long double a, long double b)
{
return a-b;
}

long double multiply(long double a, long double b)
{
return a*b;
}

long double divide(long double a, long double b)
{
return a/b;
}