2-Amaliy mashg’ulot. C++ dasturlash tilida kiritish va chiqarish. Ishdan maqsad

Yuqorida qo’yilgan masalani bajarish uchun namuna
Sizga AM/PM formatdagi soat vaqti berilgan. Sizning vazifangiz shu vaqtni 24 soatlik formatga o’girishdan iborat.
Eslatma: 24 soatlik formatdagi 00:00:00 vaqti AM/PM formatda 12:00:00AM ko’rinishida beriladi, 12:00:00PM ko’rinishida emas.
Kiruvchi ma'lumotlar: AM/PM formatdagi vaqtni hh:mm:ssAM yoki hh:mm:ssPM shaklida kiritiladi. 01 ≤ hh ≤ 12
Chiquvchi ma'lumotlar: Berilgan vaqtni 24 soatlik formatda hh:mm:ss shaklida chiqaring. 00 ≤ hh ≤ 23

Kiritishga misol	Chiqarishga misol
07:05:45PM	19:05:45

Bu masalani yechishda kiruvchi ma’lumotlarni kiritib olish uchun scanf va chiqarish uchun printfdan foydalangan qulayroq. Quyida masala yechimini ko’rib chiqamiz:

#include
#include
using namespace std;
int main (){
int a, b, c;
char d;
scanf("%d:%d:%d%cM", &a, &b, &c, &d);
if (d == 'P'){
if (a < 12) printf("%02d:%02d:%02d",a+12,b,c);
else printf("%02d:%02d:%02d",a,b,c);
}
else{
if (a == 12)printf("00:%02d:%02d",b,c);
else printf("%02d:%02d:%02d",a,b,c);
}
return 0;
}
Nazorat savollari

1. 
   Zamonaviy kompyuterlarning kiritish va chiqarish vositalari qanchalik turlicha bo’lishi mumkin?
   
2. 
   istream oqimi nima qiladi?
   
3. 
   ostream oqimi nima qiladi?
   
4. 
   Faylni o’qishning 4 bosqichini aytib bering.
   
5. 
   Faylga yozishning 4 bosqichini aytib bering.
   

Foydalanilgan adabiyotlar

1. 
   Bjarne Stroustrup. Programming: Principles and Practice Using C++ (2nd Edition). Person Education, Inc. 2014. second printing, January 2015.
   
2. 
   Harry Hariom Choudhary, Bjarne M Stroustrup. C++ Programming Professional.: Sixth Best Selling Edition for Beginner's & Expert's 2014.
   
3. 
   http://www.stroustrup.com/4th.html
   
4. 
   http://acm.tuit.uz/forum/