We are started learning how to
write a computer program we learn the fundamentals of programming. This
fundamentals are very important because we cannot solve the problem without
proper understanding the basic concepts of programming. One of the basic
concepts is the study of sequence, variable declarations and the use of
iteration or looping statements. When we
talking about sequence we are referring the basic structure of our program the
library statements that we declare prior we declare any single variable in our
program.
As a programmer it is also our responsibility to know and understand
what type of variables and its corresponding data types to be used in our
program. If we don’t know the variable and data type we can use we can generate
errors in our program by providing erroneous data and the output information
that will generate by our program in also incorrect.
As we said our computer is a tool
and machine very dependent to its users and the programs that runs on it. I
have also mention the use of iteration or looping statements. This structure in
programming is very important also because it minimize the number of lines of
code that we use in our program by using this structure we can cut down the
number of lines of our codes and the repetitive commands and routine that our
program will be perform.
In this article I will discuss another program that I wrote
for my class programming activity using C programming language I called this
program Square Number Values. This program is very simple yet it show how to
use variable declaration, the use of pointers and string declaration. What the
program will do is to ask or prompts the user to enter five numbers and then
the program will square those values that are being provided by the user and
then display the result in the screen. The compiler that I used in this program
in Code::Block editor that has a build in compiler called Dev C++ that is
freely available to download over the Internet free from any charge.
The first portion of our program code is that it will accept
input values from the user. For your information I declare three variables in
our program the x,y and the character pointer string that I named words which
is also declared as one dimensional array.
What is pointer string will do every time our looping statement run or
execute it put string value for example 1 it will attach the string value of st
so the output will be 1st, 2nd,3rd,4th
and finally the 5th for the input values for the user given to our
program.
#include <stdio.h>
#include <stdlib.h>
main()
{
int x=0,y=0;
char *words[5] =
{"st", "nd","rd","th","th"};
int values[5];
printf("\n\n");
printf("\t
======[SQUARE NUMBER VALUES]=======");
printf("\n\n");
for (x=0;
x<5; x++)
{
printf("Enter %d%s Number : ",x+1,words[x]);
scanf("%d",&values[x]);
}
Here is the second and the last portion of our program code
what our program will do is to list the values given by the user and then our
program will multiply the number b y itself in order to generate its square
value equivalent again we are using one dimensional array as our data structure
just to gather whose values previously given by our user of our program and
also to display the list of values and its computed square values. After that
our program will thank the user for using our program and will terminated the
operation of our program and return to our windows operating system.
printf("\n\n");
printf("
Original Value Square Values");
printf("\n\n");
for (x=0;
x<5; x++)
{
printf("\n %7d
%13d",values[x], values[x] * values[x]);
}
printf("\n\n");
printf("\t
Thank you for using this program.");
printf("\n\n");
system("pause");
}
I hope in this article you have learned something the use of
variable declaration, understand the usage of pointers and strings and finally
the iteration and looping statements to generate square number values. If you
have some questions feel free send me an email I am very glad to answer your
questions about the articles that I wrote in this website.
If you have some questions please send me an email at jakerpomperada@gmail.com and jakerpomperada@yahoo.com.
People here in the Philippines can reach me at my mobile number 09173084360.
Thank you very much and Happy Programming.
Sample Program Output
#include <stdio.h>
#include <stdlib.h>
main()
{
int x=0,y=0;
char *words[5] = {"st", "nd","rd","th","th"};
int values[5];
printf("\n\n");
printf("\t ======[SQUARE NUMBER VALUES]=======");
printf("\n\n");
for (x=0; x<5; x++)
{
printf("Enter %d%s Number : ",x+1,words[x]);
scanf("%d",&values[x]);
}
printf("\n\n");
printf(" Original Value Square Values");
printf("\n\n");
for (x=0; x<5; x++)
{
printf("\n %7d %13d",values[x], values[x] * values[x]);
}
printf("\n\n");
printf("\t Thank you for using this program.");
printf("\n\n");
system("pause");
}
