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I compile and run my program. It solves ok and gives the correct answer on my computer. but, ACM gives me runtime error, the error message is Invalid memory reference. I cannot see where the error is. Can anyone help me or give me some test data? My main idea is to calculate the fine of all the ...

I'm a beginner of C++. I checked all the post about 444. But they seems irrelevent with my problem. Can anyone help me? This is my code

#include <iostream>
#include <string>
using namespace std;

int main(){
int i,j,number,output;
string input,o;
char ch;
string digit="0123456789";
string ...