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C Programming: Check whether a letter is uppercase or not

C String: Exercise-24 with Solution

Write a program in C to check whether a letter is uppercase or not.

C Programming: Check whether a letter is uppercase or not

Sample Solution:

C Code:

#include<stdio.h>
#include<ctype.h>

int main()
{
	char TestChar;
	printf("\n Check whether a letter is uppercase or not :\n");  
    printf("------------------------------------------------\n");      
    printf(" Input a character : "); 
    scanf( "%c", &TestChar );
	if( isupper(TestChar) )
		printf( " The entered letter is an UPPERCASE letter. \n" );
	else
		printf( " The entered letter is not an UPPERCASE letter. \n" );
	return 0;
}

Sample Output:

 Check whether a letter is uppercase or not :
------------------------------------------------
 Input a character : p
 The entered letter is not an UPPERCASE letter.

Flowchart :

Flowchart: Check whether a letter is uppercase or not

C Programming Code Editor:

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C Programming: Tips of the Day

Is there a way to specify how many characters of a string to print out using printf()?

The basic way is:

printf ("Here are the first 8 chars: %.8s\n", "A string that is more than 8 chars"); 

The other, often more useful, way is:

printf ("Here are the first %d chars: %.*s\n", 8, 8, "A string that is more than 8 chars"); 

Here, you specify the length as an int argument to printf(), which treats the '*' in the format as a request to get the length from an argument.

You can also use the notation:

printf ("Here are the first 8 chars: %*.*s\n",
        8, 8, "A string that is more than 8 chars"); 

This is also analogous to the "%8.8s" notation, but again allows you to specify the minimum and maximum lengths at runtime - more realistically in a scenario like:

printf("Data: %*.*s Other info: %d\n", minlen, maxlen, string, info); 

The POSIX specification for printf() defines these mechanisms.

Ref: https://bit.ly/395Zj2j