This blog post explains the printable characters with their ASCII (American Standard Code for Information Interchange) value in decimal and hex format. You will also learn to find a printable character in a given list of characters.

Table of printable ASCII characters:

The following table contains the printable characters with their ASCII value in decimal and hex format.

Now let’s see a C program, to validate the above-mentioned characters are printable characters or not.

Here we will use the isprint function to check each character. The isprint is a library function that returns a non-zero value if the argument is a printable character.

In the following code, I will iterate a for loop from 0 to 127 and print the ASCII value of a character in dec which can be printed.

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

int main()
{
    unsigned int i;
    printf("All printable char in C: \n\n");

    // looping through all ASCII characters
    for (i = 0; i < 127; ++i)
    {
        if(isprint(i)!= 0)
        {
            printf("%d ", i);
        }
    }

    printf("\n\n");

    return 0;
}

Output:

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