View Code of Problem 50

#include<bits/stdc++.h>
using namespace std;
int main(){
	string s;
	char op[100];
	int k = 0;
	getline(cin,s);
	if(isdigit(s[0]))op[k++] = s[0];
	else op[k++] = '*';
	
	for(int i = 1;i<s.size();i++){
		if(isdigit(s[i]))op[k++] = s[i];
		else{
			if(op[k-1]!='*')op[k++] = '*';
			else continue;
		}
	}
	for(int i = 0;i<k;i++)cout<<op[i];
	return 0;
}