View Code of Problem 50

#include<stdio.h>
#include<string.h>
int main() {
    char ar1[80];
    int i, flag=0;
    gets(ar1);
    for (i = 0; i < strlen(ar1); i++)
    {
        if (!(ar1[i] < 58 && ar1[i] > 47)) {
            if (flag == 0) {
                printf("*");
            }
            flag = 1;
        }
        else {
            printf("%c",ar1[i]);
            flag = 0;
        }
    }
    return 0;
}