Use compound conditions to check for upper and lowercase letters : If statement « Statement « C Tutorial

#include <stdio.h>

main(){
    char cResponse = '\0';

    printf("Enter the letter A: ");
    scanf("%c", &cResponse);

    if ( cResponse== 'A' || cResponse == 'a' )
       printf("\nCorrect response\n");
    else
       printf("\nIncorrect response\n");
}

Enter the letter A: 1
      
      Incorrect response

6.3.If statement
	6.3.1.	if statement
	6.3.2.	To execute only one statement, opening and closing braces are not required
	6.3.3.	The if statement: a compound statement
	6.3.4.	If with else statement
	6.3.5.	The if-else-if statement
	6.3.6.	if statement with two else statements
	6.3.7.	if statement: compare the value from user input
	6.3.8.	Using nested ifs
	6.3.9.	Use compound conditions to check for upper and lowercase letters
	6.3.10.	Checking for a Range of Values
	6.3.11.	Use isdigit Function in if statement
	6.3.12.	Operators Used in if Comparisons
	6.3.13.	if Comparisons and Their Opposites