C program to print ASCII values of a string.

By: IncludeHelp, On 17 OCT 2016

In this program we will learn how to print ASCII value of all characters of a string in c programming language?

In this example we will read a string and print ASCII values of all characters in hexadecimal code. To print ASCII values in very simple, we have to just access one by one character from the string (by running a loop from 0 to NULL character) and prints the value using %02X format specifier.

%02X prints the 2 bytes 0 padded Hexadecimal value of any character.

C program (Code Snippet) - Print ASCII of a String

Let’s consider the following example:

/*c program to print ascii values of a string*/

#include <stdio.h>

int main(){
	char str[100];
	int i;
	
	printf("Enter a string: ");
	fgets(str,100,stdin); 
	//scanf("%s",str);
	
	printf("String is: %s\n",str);
	printf("ASCII value in Hexadecimal is: ");
	for(i=0; str[i]!='\0'; i++){
		printf("%02X ",str[i]);
	}
	printf("\n");
	
	return 0;
}

Output

    Enter a string: Hello World!
    String is: Hello World! 

    ASCII value in Hexadecimal is: 48 65 6C 6C 6F 20 57 6F 72 6C 64 21 0A