Check for alphabet – “Is an alphabet” as True Condition – Computer Sir Ki Class

Check for alphabet – “Is an alphabet” as True Condition – Computer Sir Ki Class

Code Learning #CPP#1876

Check for alphabet – “Is an alphabet” as True Condition

Checking for user’s entry being is an alphabet first, else tell that it is not an alphabet

Learning Objectives

Learning to check for inside of the range values first as true condition in a selection statement.

Source Code

Run Output

Enter an alphabet : A

You entered and alphabet.



- OR -

Enter an alphabet : #

You did not enter an alphabet.

Code Understanding

char c; cout<<“Enter an alphabet : “; cin>>c;
Collecting a character from the user.

if((c>=’A’ && c<=’Z’) || (c>=’a’ && c<=’z’))
Forming a condition where given character c is inside the alphabet range of upper case and lower case alphabets. When two inside range conditions are checked together they are qualified by && operator for inside conditions and || operator between two such out of range conditions.

{cout<<“You entered and alphabet.”<<endl;}
Since the true condition appears when it is inside of the range of being an alphabet, then it is reported accordingly.

else {cout<<“You did not enter an alphabet.”<<endl;}
This is the case of false condition for check of being an alphabet, which means the given character is definitely not an alphabet.

Notes

In real world applications, inside of range check is more efficient if the bulk of data coming in an stream is inside of the expected range.

Suggested Filename(s): notanalphabet.cpp

sunmitra| Created: 23-Dec-2017 | Updated: 15-Sep-2018|

Post Views: 531

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