#include <iostream>
using namespace std;
int main()
{
string x;
cout << "Enter Indentifier: ";
cin>>x;
if(x[0]=='-'||x[0]=='!'||x[0]=='@'||x[0]=='$'||x[0]=='#'||x[0]=='*'
||x[0]=='%'||x[0]=='+'||x[0]=='/'||x[0]=='>'||x[0]=='<'||x[0]=='^'||x[0]=='&')
{
cout << "Not Valid!" << endl;
}
else if(x=="float"||x=="double"||x=="printf"||x=="scanf"||x=="int")
{
cout << "VALID!" << endl;
}
else
{
cout << "Not Valid";
}
}
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