#include <stdio.h>
#include <stdlib.h>

/*
make a program what runs forever, until enter 'e' from keyboard
declare a static array / long 10 / filled with any integer numbers
on keyboard entry 0 .. 9 print this number and also the value from the array with this as the index
*/

char s = ' ';
int a = 0,i = 0;
int myarray[] = {10,11,12,13,14,15,16,17,18,19};

int main()
{
    while ( s != 'e')
    {
        printf( "keyboard type a 'e' for EXIT or enter a number 0 ..9 as index for integer array value : ");
        scanf(" %c", &s);
        //printf("see %c \n",s);
        a = (int)s;
        if ( a >= 48 && a <= 57 )
        {
            i=a-48;
            printf("number %d, val %d\n",i,myarray[i]);
        }
    }

    return 0;
}