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C

islower()

checks whether character is lower case

Syntax:

int islower(int c);

Example:

#include 

int main()
{
   char ch;
   printf("Enter any character\n");
   scanf("%c", &ch);

   if ( islower ( ch ) )
   printf ( "\nEntered character is lower case character") ;
   else
   printf("\nEntered character is not lower case character");
}
Output:

Enter any character
a
Entered character is lower case character

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