write a code that supports strings and allows the user to select whether to view the string in upper or lower case

++
#include<iostream>
using namespace std;
int main()
{
	char str[50];
	int i;
	cout<<"Enter the string";
	cin>>str;
	for(i=0;i<50;i++)
	{
		if(str[i]>=65&&str[i]<=90)
		{
			str[i]=str[i]+32;
		}
		else if(str[i]>=97&&str[i]<=122)
		{
			str[i]=str[i]-32;
		}
	}
	cout<<"\n"<<str;
	return 0;
}