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#include<cstring>
#include<limits>
#include<iostream>
using namespace std;
int main()
{
char targetString[100] = "fox";
char targetString2[100] = "the";
char strings[100];
cin>>strings;
double minDistance = std::numeric_limits<double>::infinity();
for (int x = 0; x < strlen(strings); x++)
{
	if (strings[x].equals(targetString))
	{
		for (int y = x; y < strings->length; y++)
		{
			if (strings[y].equals(targetString2))
			{
				if (minDistance > (y - x))
				{
					minDistance = y - x;
				}
			}
		}
		for (int y = x; y >= 0; y--)
		{
			if (strings[y].equals(targetString2))
			{
				if (minDistance > (x - y))
				{
					minDistance = x - y;
				}
			}
		}
	}
}
cout<<minDistance;
return 0;
}

prog.cpp: In function ‘int main()’:
prog.cpp:14:17: error: request for member ‘equals’ in ‘strings[x]’, which is of non-class type ‘char’
  if (strings[x].equals(targetString))
                 ^~~~~~
prog.cpp:16:32: error: request for member ‘length’ in ‘*(char*)(& strings)’, which is of non-class type ‘char’
   for (int y = x; y < strings->length; y++)
                                ^~~~~~
prog.cpp:18:19: error: request for member ‘equals’ in ‘strings[y]’, which is of non-class type ‘char’
    if (strings[y].equals(targetString2))
                   ^~~~~~
prog.cpp:28:19: error: request for member ‘equals’ in ‘strings[y]’, which is of non-class type ‘char’
    if (strings[y].equals(targetString2))
                   ^~~~~~

Standard output is empty