Como faz para usar arma no dayz mta

Tarefa de classe 26/03
8.1
#include <cstdlib>
#include <iostream>
#include <cmath>

using namespace std;

double GtoR ( double g )
{
return g*M_PI/180.0 ; } int main(int argc, char *argv[])
{
double R,G ;

cout << " DIGITE O VALOR EM GRAUS A SER CONVERTIDO PARA RADIANOS" << endl; cin >> G ; R = GtoR(G); cout << " O ANGULO EM RADIANOS EH " << R << endl;

system("PAUSE"); return 0 ;
}

8.3
#include <cstdlib>
#include <iostream>
#include <cmath>

using namespace std;

double CtoF ( double c )
{
return ( 9.0 * c /5.0 ) + 32.0 ; } int main(int argc, char *argv[])
{
double F,C ; cout << " DIGITE O VALOR DO CELSIUS A SER TRANSFERIDO PARA FARENHEIT" << endl; cin >> C ; F = CtoF(C); cout << " O VALOR EM FAREHEIT EH " << F << endl;

system("PAUSE"); return 0 ;
}
8.12
#include <cstdlib>
#include <iostream>
#include <cmath>

using namespace std;

int sinal( double n )
{ if( n>0 ) return 1; else if ( n==0 ) return 0; else return -1; } int main(int argc, char *argv[])

{ int S; double N ; cout << " ENTRE COM UM NUMERO "; cin >> N ; S = sinal (N); cout << " O sinal eh"<< S << endl;

system("PAUSE"); return 0 ;
}
8.16
#include <cstdlib>
#include <iostream>
#include <cmath>

using namespace std;

double volume(double r)
{ return 4.0/3.0*M_PI*pow(r,3); } int main (int argc, char*argv[])
{ double R, V; cout << " Entre com o raio " << endl; cout << "-------------------------------------- " << endl <<endl, cin >> R; V = volume (R); cout << " O volume de " << R