chario.c

#include<stdio.h>
int main()
{
    printf("Enter a key to show\n");
    printf("==============\n");
    char ch = NULL;
    do {
        ch = fgetc(stdin);
        if (ch != '\n')
        {
            printf(" %d\n", ch);
        }

    } while (ch != 27);

    return 0;
}