Exam (elaborations)
Condition statment in C language
- Module
- Problem Solving (QH0305)
- Institution
- Southampton Solent University (SSU)
Condintions, If Elseif and Switch.
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SOLENT UNIVERSITYFig5-Task1-GradeA
In figure 6 the user input ‘a’ = 15 and ‘b’ = 9 and press 4 for subtraction as it is showing below.
Fig6-Task1-GradeA
In figure 7 is showing if the user enters any other number that is not an option the program will show the
message “Please enter 1 to 4 only.”
Fig7-Task1-GradeA
Assessment 2
Introduction of Conditional Statement
Conditional statement is using in programming to run a determinate condition. When the condition is true the
program will print the allocated end statement. For example if the 2nd of January is Monday the end statement
will say ‘It’s Bank Holiday, extra day off’ but if false the condition the program run a different code that say
‘Sorry, you need to go back to work’. In this case we can take in consideration two type of Conditional
Statement; If statement and Switch statement.
If statement, as we said before is using to check if a specific condition is true or false and execute when is
True but in a multiple conditional Switch statement is used more often as the performance are more efficient.
Switch statement is working in a different way, as it takes the given value and check inside the case if there is
a match. It is divided by case and for each of them there is a break; that will stop to check the condition when
it is true and print the allocated end statement. Both Conditional statements are used in this Assessment but
let’s give an example for each of them.
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, SOLENT UNIVERSITY
Example of If statement:
Start
Condition
If true end statement
false
Else If true end statement
false
Else end statement
How we can see If statement simply working in this way, when the condition is true go straight to the end
statement of If, if it is false go to the next and print Else condition. Else is used when there are not condition
true, then the system will execute Else. For each of them there is a different statement that will be print. See
grade D to B for explanation how the program will print out when reach the condition.
Example of Switch statement:
Start
Condition
Case 1= true /break;
false
Case 2= true /break; End statement
false
default End Statement
How we can see for Switch Statement the condition will be checked if it is equal to the case if one of them is
true will print the end statement. Each case in switch has a break; to tell the program to stop to check other
condition. It’s recommended to use after the case a default for not have any issue in case that all of them are
false. Default is like Else in If statement, when all the case are false the program will execute the default
option. See grade A where switch statement has been used, it will give a visual understanding how the
program works in this conditional statement. (Gookin, 2004)
Grade D
This task requires to create a program that it will ask the user to select four options and after that it will
calculate the fees that the user will pay. The options are char, so for make sure that the program run properly
let’s give a space after the first quotation mark in scanf.
On the options the user can use ether uppercase or lowercase characters.
The program in option two to four it will multiplicate the cost for the allocated percentual fee. Also, to round
and take the two number after the point it has been used %.2 before the ‘f’ as float number.
%. and ‘X’ number after, it counts how many numbers needs to print after the dot. For example for show
25.64 is %.2f.
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