/*
 * This is similar to trycatch.cpp, but it demonstrates that calling functions can catch exceptions
*  thrown by the function that it calls.
 * Author: Ying Li 
*/
#include <cstdio>
int childFunc () {
    int q;
    try {
        printf("Enter a number (0..9): ");
        int k = scanf("%d", &q);
        if (k == 0) {
            scanf("%*s");
            throw "value is not a number";
        }
        if (q < 0 || q > 9) {
            throw q; }
        }
        catch (int v) {
            printf("Error: number %d is out of range (0..9)\n", v);
            return v; 
        }
//         catch (char *s) {
//             printf( "Other error: %s\n", s );
//         }
        return q; 
}

int main () {
    int val;
    for (;;) {
        try {
            val = childFunc();
        }
        catch (const char *s) {
            printf("Error: %s\n", s);
            continue;
        }
        if (val == 0) break;
    }
    return 0; 
}