1570-T1

Question 1

types of integers

Answer 1

short int, int, long int

Question 2

short int

Answer 2

2 bytes, -32k to + 32k, max val of unsigned short is (2^16) + 1

Question 3

int

Answer 3

usually 4 bytes, -2b to +2b

Question 4

long int

Answer 4

4 bytes

Question 5

types of floating point

Answer 5

float, double, long double

Question 6

float

Answer 6

4 bytes, 6 sig figs

Question 7

double

Answer 7

8 bytes, 15 sig figs

Question 8

long double

Answer 8

19 sig figs (usually)

Question 9

set output precision

Answer 9

include <iomanip>, cout << setprecision(# sig figs) << output</iomanip>

Question 10

naming/identifiers

Answer 10

alpha numeric and underscore, cannot begin with number

Question 11

non numeric types

Answer 11

character, string, boolean, (constant)

Question 12

character

Answer 12

~2 bytes

Question 13

string

Answer 13

~1 byte per char, cin stops at white space, need getline(cin, myString), also #include <string> for isupper(str), islower(str), and str. length()</string>

Question 14

for non compatible types

Answer 14

static_cast <type> (the variable)</type>

Question 15

ascii

Answer 15

alpha numeric and special chars, represented by 7 bit binary num, 128 cars defined

Question 16

post/pre increment/decrement

Answer 16

can be used with any non bool arithmetic types (can be used for bool to make true for increment)

Question 17

operator precedence

Answer 17

(); a++, a - -; ++a, - -a; !; *, /, %; +, -; <, >, <=, >=; ==, !=; &&; ||; =

Question 18

random number generation

Answer 18

include <ctime>, #include <cstdlib>, srand(time(nullptr)), for inclusive [min, max] : min + rand() % (max-min+1)</cstdlib></ctime>

Question 19

switch case var types

Answer 19

int, char, bool

Question 20

ternary operator

Answer 20

cout«(qualifying expression? “true i output”:”else output”) &laquo_space;endl;

Question 21

what does #include<iostream> do?</iostream>

Answer 21

tells the compiler that your program is using functions/code defined in the iostream libraries/files