Concept explainers
toupper:
The lowercase letter will be converted by uppercase letter using “toupper” function.
Example:
Consider the example of “toupper” is as follows:
//declare the variable
char c;
//convert equivalent lowercase letter
c = toupper ('x');
//display the output
cout << c;
Here, the “toupper” function is used to convert the given character into uppercase letter.
tolower:
The uppercase letter will be converted by lowercase letter using “tolower” function.
Example:
Consider the example of “tolower” is as follows:
//declare the variable
char c;
//convert equivalent lowercase letter
c = tolower ('X');
//display the output
cout << c;
Here, the “tolower” function is used to convert the given character into lowercase letter.
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Starting Out with C++ from Control Structures to Objects (9th Edition)
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