Лекция С++ №1
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Обращение к полям структуры
Типы данных
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Количество бит на разных моделях |
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Специфические типы |
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Эквивалент |
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C++ standard |
LP32 |
ILP32 |
LLP64 |
LP64 |
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short |
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at least |
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short int |
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16 |
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signed short |
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signed short int |
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short int |
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unsigned short |
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unsigned short int |
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unsigned short int |
16 |
16 |
16 |
16 |
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int |
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at least |
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signed |
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16 |
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signed int |
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int |
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unsigned |
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unsigned int |
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unsigned int |
16 |
32 |
32 |
32 |
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long |
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at least |
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long int |
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32 |
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signed long |
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signed long int |
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long int |
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unsigned long |
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unsigned long int |
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unsigned long int |
32 |
32 |
32 |
64 |
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long long |
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long long int |
at least |
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long long int |
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64 |
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signed long long |
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signed long long int |
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unsigned long long |
unsigned long long int |
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unsigned long long int |
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64 |
64 |
64 |
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1 == sizeof(char) <= sizeof(short) <= sizeof(short) <= sizeof(int)
<= sizeof(int) <= sizeof(long)
<= sizeof(long) <= sizeof(long long)
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Размер |
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Диапазон значений |
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тип |
в битах Формат |
Приблизительно |
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Точно |
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char |
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signed |
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-128 to 127 |
8unsigned |
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0 to 255 |
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signed |
± 3.27 · 104 |
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-32768 to 32767 |
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16unsigned |
0 to 6.55 · 104 |
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0 to 65535 |
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signed |
± 2.14 · 109 |
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2,147,483,648 to 2,147,483,647 |
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int |
32unsigned |
0 to 4.29 · 109 |
0 to 4,294,967,295 |
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9,223,372,036,854,775,808 |
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signed |
± 9.22 · 1018 |
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to 9,223,372,036,854,775,807 |
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64unsigned |
0 to 1.84 · 1019 0 to 18,446,744,073,709,551,615 |
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float |
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± 3.4 · 10± 38 |
min subnormal: ± 1.401,298,4 · 10-47 |
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(~7 digits) |
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32 |
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max: ± 3.402,823,4 · 1038 |
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min subnormal: ± |
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± 1.7 · 10± 308 |
4.940,656,458,412 · 10-324 |
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(~15 digits) |
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max: ± 1.797,693,134,862,315,7 |
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64 |
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· 10308 |
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Операторы ввода и вывода cin и cout
-Описаны в стандартной библиотеке std
-cin - объект входного потока пространства имен std
std::cin >> x; // взятие из потока введенное пользователем занчение
-cout - объект выходного потока пространства имен std
std::cout << “выходной поток”; //вывод в поток информацию, т.е. вывести ее пользователю
Что нужно подготовить?!
1. Изучить страницу cppreference.com раздел Fundamental types
2.Изучить материл про ввод и вывод в поток cin и cout
3.Повторить материал про ФУНКЦИИ и
МАССИВЫ