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#include <cstdlib>#include <iostream>using namespace std;void checknumber(int number){    if(number>10){          cout << "The number you entered is bigger than 10 !" << endl;    }else if(number==10){          cout << "The number you entered is exactly 10 !" << endl;    }else{          cout << "The number you entered is smaller than 10.." << endl;    }}void checktwice(int twice){    if(twice>10){          cout << "is bigger than 10 !]" << endl;    }else if(twice==10){          cout << "equals 10 !]" << endl;    }else{          cout << "is also smaller than 10 !]" << endl;    }}int main(int argc, char *argv[]){    char number = 0;		cout << "Please enter a number: ";		cin >> number;    do    {        cin.flush();        cin >> number;	    if( !isdigit(number) )	    {		    cout << "You didn't enter a number, try again: " << endl;	    }    }while(!isdigit(number));                                  system("pause");    return EXIT_SUCCESS;}