The document discusses loops in C++ programming, including while and for loops. It provides examples of using while loops to output numbers within a certain range and increment. It also demonstrates for loops, explaining their structure and comparing them to while loops. Homework problems are provided asking the reader to write loops to output various numeric conversions in increments.
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C Programming Language is the most popular computer language and most used programming language till now. It is very simple and elegant language. This lecture series will give you basic concepts of structured programming language with C.
The objective of the Level 5 Diploma in Information Technology is to provide learners with an excellent foundation for a career in a range of organisations. It designed to ensure that each learner is ‘business ready’: a confident, independent thinker with a detailed knowledge of Information Technology, and equipped with the skills to adapt rapidly to change.
C Programming Language is the most popular computer language and most used programming language till now. It is very simple and elegant language. This lecture series will give you basic concepts of structured programming language with C.
C Programming Language is the most popular computer language and most used programming language till now. It is very simple and elegant language. This lecture series will give you basic concepts of structured programming language with C.
Write a C function that returns the length of a string. Function name: strinq...hwbloom42
Write a C function that returns the length of a string. Function name: strinqLenqth Description: Determines the number of characters in a string.
Input parameters: *strp a pointer to the string whose length is to be calculated. Returns :| The lenqth of the string. unsigned int strinqLenqth(char
*str);
Complete Information till 2D arrays. In this slides you can also find information about loops and control decision....
Best slides for beginners who wants to learn about C programming language..
The objective of the Level 5 Diploma in Information Technology is to provide learners with an excellent foundation for a career in a range of organisations. It designed to ensure that each learner is ‘business ready’: a confident, independent thinker with a detailed knowledge of Information Technology, and equipped with the skills to adapt rapidly to change.
C Programming Language is the most popular computer language and most used programming language till now. It is very simple and elegant language. This lecture series will give you basic concepts of structured programming language with C.
Write a C function that returns the length of a string. Function name: strinq...hwbloom42
Write a C function that returns the length of a string. Function name: strinqLenqth Description: Determines the number of characters in a string.
Input parameters: *strp a pointer to the string whose length is to be calculated. Returns :| The lenqth of the string. unsigned int strinqLenqth(char
*str);
Complete Information till 2D arrays. In this slides you can also find information about loops and control decision....
Best slides for beginners who wants to learn about C programming language..
The objective of the Level 5 Diploma in Information Technology is to provide learners with an excellent foundation for a career in a range of organisations. It designed to ensure that each learner is ‘business ready’: a confident, independent thinker with a detailed knowledge of Information Technology, and equipped with the skills to adapt rapidly to change.
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2. Loops: While And For.
The while Statement:
Tests a condition and repeats a block of one or
more statements as long as the condition is
true.
EXAMPLE
While (expression) x=0; //initial statement, x starts from 0
{ while (x<2) //test expression, It
{ //shall continue only till x<2
statement(s);
cout<<x<<endl; //output
} x++; //increament expression
}
3. Lets Look At This Example…..
The number we are using is in
#include <iostream> the form of integers and we
need to find out the sqaure and
using namespace std;
cube and make 3 columns in the
void main() output. “n” means a new line
{
The number is starting from 1
int number;
and continues till 10 as the
cout << "NUMBER SQUARE CUBEn" condition is that the number
<< "------ ------ ----n"; lasts as long as its less than 11
number = 1;
while (number < 11) The output is that we first have
number than square and at the
{
end cube with a space so that it
cout << number fits with the categories above!
<< " "<< number * number << " “
<< number * number * number << endl;
The increment is +1 which means
number++; // increment num
that the next no will be +1 to the
} previous no eg. if the previous
system ("pause"); number is 2 then the next
number will be 2+1=3 and so on.
}
4. Lets Look At Another Example
• Write a C++ program that converts feet to meters.
The program should
display feet from 3 to 30 in 3-foot increments and
the corresponding meter equivalents.
Use the relationship that 1 meter = 3.28 feet.
Things that can be determined by looking at the question are the
following:
1-We need to convert feet to meters and for that the formulae is
M=3.28*no (in feet)
2-We need to make 2 columns named FEET and METERS.
3-The no should state from 3 (n=3) and the while statement should
continue till 30 (n<30) with a 3-foot increment (no=no+3) which
means that if the previous number is 9 the next number will be
9+3=12 and so on…
NOW LETS SOLVE THIS PROBLEM TOGATHER
5. Solution: We are using int as we will
be dealing with numbers
#include <iostream> only
using namespace std; We need to make 2
void main() columns of feet and
{ meter.
int no, m;
cout<<"FEET METERSn"
<<"---- ------n"; The number is starting
from 3 till 27 as its less
no=3; than 30 and then we find
while (no<30) m (meters).
{
m=3.28*no;
cout<<no<<" "<<m<<endl; At the end we simply output
no=no+3; the no and m and update the
} counter as +3 so that we get
numbers like 3,6,9… and their
system ("pause"); corresponding values in m
}
6. • Home Work:
1.Write a Program to print the numbers 2 to 10
in increments of two. The output of your
program should be the following: 2 4 6 8 10
2. Write a C++ program that converts gallons to
liters. The program should
display gallons from 10 to 20 in one-gallon
increments and the corresponding liter
equivalents. Use the relationship that 1 gallon =
3.785 liters.
7. For Loop:
The for Statement:
In C++, a for loop is constructed by using a for
statement. This statement performs the
same functions as the while statement but uses
a different form.
- It enables count controlled loops.
for (initial statement; test expression; increment
expression)
{ Example:
statement(s); for(i=1; i<5; i++)
} cout<<i<<endl;
8. Lets Look On This Example
-Use a counter named i that has an initial value
of 1, a final value of 20, and an increment of 1.
Solution:
#include<iostream>
using namespace std;
void main ()
{
int i;
for (i=1; i<20; i++)
cout<<i<<endl;
system ("pause");
}
9. Main Difference Between For And
While Loop
• While loop - used for looping until a condition
is satisfied and when it is unsure how many
times the code should be in loop.
• For loop - used for looping until a condition is
satisfied but it is used when you know how
many times the code needs to be in loop.
10. • Homework
1-Use a counter named j that has an initial value of
one, a final value of 100, and an
increment of 5.
2-Write a C++ program to convert kilometers/hr to
miles/hr. The program should produce a table of 10
conversions, starting at 60 km/hr and incremented
by 5 km/hr. (no=60; no<=110); no=no+5)
The display should have appropriate headings and
list each km/hr and its equivalent miles/hr
value. Use the relationship that 1 kilometer =0.6241
miles.