diktat bab3 dev c++

2.
#include <iostream>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */
using namespace std;
int main(int argc, char** argv) {
float L,r,phi=3.14,V;
cout<<"Masukkan jari-jari: "; cin>>r;
V=4/3*phi*r*r*r;
cout<<"Volume Bola= "<<V;

return 0;
}

3.
#include <iostream>
#include <math.h>
/* run this program using the console pauser or add your own getch, system("pause") or input loop */
using namespace std;
int main(int argc, char** argv) {
int A,B; float C;
cout<<"Program mencari hipotenusa"<<endl;
cout<<endl;
cout<<"Masukkan panjang A= "; cin>>A;
cout<<"Masukkan panjang B= "; cin>>B;
C=sqrt(A*A+B*B);
cout<<"Hipotenusanya= "<<C;


return 0;
}

4.
#include <iostream>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */
using namespace std;
int main(int argc, char** argv) {
int detik,jam,menit,sisa,sisa2;


cout<<"Masukkan jumlah detik: "; cin>>detik;

jam=detik/3600;
sisa=jam&3600;
menit=sisa/60;
sisa2=menit%60;
detik=sisa2;

cout<<"Jam   : "<<jam<<endl;
cout<<"menit : "<<menit<<endl;
cout<<"detik : "<<detik;
return 0;
}

5.
#include <iostream>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */
using namespace std;
int main(int argc, char** argv) {
int j,m,detik,jam,menit,hasil;


cout<<"Masukkan jumlah jam: "; cin>>jam;
cout<<"Masukkan jumlah menit: "; cin>>menit;
cout<<"Masukkan jumlah detik: "; cin>>detik;

j=jam*3600;
m=menit*60;
hasil=j+m+detik;
cout<<"Jumlah detik : "<<hasil;
return 0;
}

6.

#include <iostream>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */
using namespace std;

struct satu{
int jam;
int menit;
int detik;
};

struct dua{
int jam;
int menit;
int detik;
};

struct selisih{
int jam;
int menit;
int detik;
};
int main(int argc, char** argv) {
satu jam, menit, detik;
dua ja, meni, deti;
selisih j, men, det;

cout<<"        PROGRAM MENCARI SELISIH WAKTU"<<endl;
cout<<"         Ubah ke detikterlebih dahulu"<<endl<<endl;

cout<<"PERTAMA"<<endl;
cout<<"jam   : "; cin>>jam.jam;
cout<<"menit : "; cin>>menit.menit;
cout<<"detik : "; cin>>detik.detik;

cout<<endl<<endl;
cout<<"KEDUA"<<endl;
cout<<"jam   : "; cin>>ja.jam;
cout<<"menit : "; cin>>meni.menit;
cout<<"detik : "; cin>>deti.detik;

if((detik.detik-deti.detik)<0){
det.detik=(60+deti.detik)-detik.detik;
men.menit*60-60;
}else{
det.detik=detik.detik-deti.detik;
}

if((menit.menit-meni.menit)<0){
men.menit=(60+meni.menit)-menit.menit;
j.jam*60-60;
}else{
men.menit=menit.menit-meni.menit;
}

j.jam=jam.jam-ja.jam;

cout<<endl<<endl;
cout<<"SELISIH";
cout<<"jam     : "<<j.jam<<endl;
cout<<"menit   : "<<men.menit<<endl;
cout<<"detik   : "<<det.detik<<endl;
return 0;
}

8.
#include <iostream>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */
using namespace std;
int main(int argc, char** argv) {
int dalam,luar,rumusD, rumusL,luasCD;
float phi=3.14;

cout<<"Masukkan jari-jari bagian dalam CD= "; cin>>dalam;
cout<<"Masukkan jari-jari bagian luar CD = "; cin>>luar;

rumusD=phi*dalam*dalam;
rumusL=phi*luar*luar;

luasCD=rumusL-rumusD;

cout<<"Luas plat CD= "<<luasCD<<" cm";
return 0;
}

10.
#include <iostream>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */
using namespace std;
int main(int argc, char** argv) {

int biner;
cout<<"       Konversi Bilangan Biner 4 Digit ke Desimal"<<endl<<endl;
cout<<"Masukkan bilangan biner= "; cin>>biner;
switch(biner){
case 1000:
cout<<"desimal = 8";
break;
case 1001:
cout<<"desimal= 9";
break;
case 1010:
cout<<"desimal = 10";
break;
case 1011:
cout<<"desimal = 11";
break;
case 1100:
cout<<"desimal = 12";
break;
case 1101:
cout<<"desimal = 13";
break;
case 1110:
cout<<"desimal = 14";
case 1111:
cout<<"desimal = 15";
default:
cout<<"selain bilangan biner tidak bisa";
break;

}
return 0;
}